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УДК 582.594 (597) DOI: http:/dx.doi.org/10.14258/turczaninowia.l6.4.7
L.V. Averyanov Л.В. Аверьянов
NEW AND RARE ORCHIDS (ORCHIDACEAE) IN THE FLORA OF CAMBODIA AND LAOS
НОВЫЕ И РЕДКИЕ ВИДЫ ОРХИДНЫХ ВО ФЛОРЕ КАМБОДЖИ И ЛАОСА
Summary. Herbarium material collected in 2009-2013 in Cambodia and Laos provides 240 new localities for 156 orchid species (from 73 genera). Among them, 13 and 45 species respectively are new for the flora of each country. One species (Bulbophyllum konstantinovii) discovered in Cambodia is described as new for science. Eight genera (Acanthephippium, Didymoplexiopsis, Eclecticus, Herpysma, Hetaeria, Lecanorchis, Neuwiedia, and Trichosma) were found in Laos at first.
Key words: Cambodia, flora, Laos, Orchidaceae, plant diversity.
Аннотация. Гербарные сборы 2009-2013 годов документируют 240 новых нахождений 156 видов орхидных (из 73 родов) в Камбодже и Лаосе. Среди них 13 и 45 видов, соответственно, приводятся впервые для этих стран. Один вид (Bulbophyllum konstantinovii), найденный в Камбодже, описывается в качестве нового для науки. Восемь родов (Acanthephippium, Didymoplexiopsis, Eclecticus, Herpysma, Hetaeria, Lecanorchis, Neuwiedia и Trichosma) приводятся для флоры Лаоса впервые.
Ключевые слова: Камбоджа, Лаос, орхидные, разнообразие растений, флора, Orchidaceae.
INTRODUCTION
The orchid flora of Cambodia and Laos still remains one of the less studied orchid floras in Tropical Asia. In comparison to other countries of Indochina Peninsula, such as Thailand or Vietnam each including at least 1100 species (Averyanov, 2003; Pedersen et al., 2011; Seidenfade, 1992), only 163 orchid species were recorded for Campodia (Seidenfaden, 1992) and about 485 species for Laos (Newman et al., 2007; Schuiteman et al., 2008). Meanwhile, according to their square and various natural conditions all countries of Indochina should certainly conceal similar orchid richness and diversity. Present paper summarizes some consequent steps in studies of the orchid flora of Cambodia and Laos based on herbarium specimens collected by different collectors in the field during 2009-2013.
The paper provides 240 new localities for 156 species (from 73 genera) among which 13 species are new for the flora of Cambodia and 45 species represent new records for Laos. Eight genera are recorded for the Laotian flora at first: Acanthephippium, Didymoplexiopsis, Eclecticus, Herpysma, Hetaeria, Lecanorchis, Neuwiedia, and Trichosma. Mentioned new records (see
tables 1 & 2) represent significant addition to our previous knowledge (Callaghan, 2004; Gagnepain, Guillaumin, 1932-1934; Schuiteman, Vogel, 2000; Seidenfaden, 1966, 1973, 1975; Svengsuksa, Lamxay, 2005; Vidal, 1959) summarized in last accounts of Cambodian (Seidenfaden, 1992) and Laotian floras (Newman et al., 2007; Schuiteman et al., 2008). One species, B. konstantinovii Aver., discovered in Cambodia is described as new for science.
Table 1. Orchid species recorded as new for the flora of Cambodia*
Acriopsis liliifolia (J. Koenig) Seidenf. Aerides crassifolia Par. ex Burb. Bulbophyllum parviflorum Par. et Rchb. f. B. rufilabrum Par. ex Hook. f. B. tricornoides Seidenf. Calanthe cardioglossa Schltr. Dendrobium indivisum (Blume) Miq. D. keithii Ridl.
*Acriopsis liliifolia, Dendrobium indivisum, Eria lasiopetala, and Porpax elwesii were recently mentioned in the amateur site "Orchids of Cambodia" (http://www. orchidcambodia.com) without citation of locality and voucher specimens proving species occurrence in the country.
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Ботанический институт им. В.Л. Комарова РАН, ул. Проф. Попова, 2; 197376, Санкт-Петербург, Россия; e-mail: av_leonid@mail.ru; av_leonid@yahoo.com
Komarov Botanical Institute, Russian Academy of Sciences, Prof. Popovа str, 2; 197376, St. Petersburg, Russia
Поступило в редакцию 20.12.2013 г. Принято к публикации 24.12.2013 г.
Submitted 20.12.2013 Accepted 24.12.2013
D. scabrilingue Lindl.
D. setifolium Ridl.
Eria lasiopetala (Willd.) Ormerod
E. muscicola (Lindl.) Lindl. Porpax elwesii (Rchb. f.) Rolfe
Table 2. Orchid species recorded as new for the flora of Lao PDR
Acanthephippium striatum Lindl. Agrostophyllum callosum Rchb. f. Bulbophyllum apodum Hook. f. B. psychoon Rchb. f.
B. umbellatum Lindl. Cheirostylis griffithii Lindl.
C. pusilla Lindl.
C. spathulata J.J. Sm. C. thailandica Seidenf. Coelogyne virescens Rolfe Cymbidium eburneum Lindl. Dendrobium kontumense Gagnep. Didymoplexiopsis khiriwongensis Seidenf. Eclecticus chungii P. O'Byrne Epigeneium chapaense Gagnep. Eria calcarea V.N. Long et Aver. E. corneri Rchb. f. E. thao Gagnep.
Flickingeria angustifolia (Blume) A.D. Hawkes
Gastrochilus calceolaris (Buch.-Ham. ex Sm.) D. Don
G. pseudodistichus (King et Pantl.) Schltr.
Goodyera fumata Thwaites
G. hispida Lindl.
Herpysma longicaulis Lindl.
Hetaeria affinis (Griff.) Seidenf. et Ormerod
Holcoglossum subulifolium (Rchb. f.) Christenson
Lecanorchis vietnamica Aver.
Liparis balansae Gagnep.
L. pumila Aver.
Micropera poilanei (Guillaumin) Garay
Nephelaphyllum tenuiflorum Blume
Neuwiedia zollingeri Rchb. f.
Oberonia cavaleriei Finet
Otochilus pseudoporrectus Aver.
Paphiopedilum canhii Aver. et O. Gruss
Papilionanthe biswasiana (Ghose et Mukerjee) Garay
Phalaenopsis wilsonii Rolfe
Podochilus oxystophylloides Ormerod
Sunipia rimannii (Rchb. f.) Seidenf.
Thelasis khasiana Hook. f.
Thrixspermum sutepense (Rolfe ex Downie) Tang et F.T. Wang
Trichosma simondii Gagnep. T. suavis Lindl.
Zeuxine flava (Wall. ex Lindl.) Trimen Z. nervosa Trimen
The list of all discoveries is presented below. The orchid names in the list are arranged in alphabetic order. Maximally abbreviated and unified text of herbarium labels is reported for each collecting number and includes geographical locality, coordinates and elevation (when available), collection date, collectors' names, collection number and acronym of Herbarium where mentioned specimen is housed.
The following standard abbreviations are used in the text: prov. (province), distr. (district), vic. (vicinity, vicinities), elev. (elevation, elevations), mt. (mountain, mountains), N.P. (National Park), N.P.A. (National Protected Area). The names of orchid species and genera reported for Cambodia and Laos at first are marked with crosslet (+) and asterisk (*) respectively. Name of a new species is marked by double asterisk (**). The following Herbarium acronyms are used in the text:
CPC - Herbarium of the Center for Plant Conservation, Vietnam Union of Science and Technology Associations, Hanoi, Vietnam.
LE - Herbarium of Komarov Botanical Institute, Russian Academy of Sciences, St. Petersburg, Russian Federation.
NHOL - National Herbarium of Laos, Vientiane, Lao PDR.
NUOL - Herbarium of National University of Laos, Vientiane, Lao PDR.
Prefixes "CPC" and "LA-VN" at some collecting numbers represent abbreviations:
CPC - The Center for Plant Conservation.
LA-VN - Lao-Vietnamese expedition.
Both collecting series are attributed to herbaria collected in expedition managed by the Center for Plant Conservation, Vietnam Union of Science and Technology Associations with main collectors - Prof. Leonid V. Averyanov and Nguyen Tien Hiep.
New and rare orchids in Cambodia and in Laos
Acampe Lindl.
A. ochracea (Lindl.) Hochr.
LAOS, Vientiane prov., Phou Khao Khouay N.P., Tad Leuk waterfall, 18°23'99.1 N, 103°04'03.1 E, 28 Nov. 2012, E.L. Konstantinov et al., 52OR-L-GPS005 (LE). LAOS, Vientiane prov., Kasi distr., Tam Tai village, about 10 km to the NW of Kasi town, 19°12'57" N, 102°14'59" E, 500-650
m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 767 (CPC, NHOL, NUOL).
A. praemorsa (Roxb.) Blatt. et McCann
LAOS, Nam Lik, 18°36'80.8 N, 102°24'60.5 E, 24 Nov. 2011, E.L. Konstantinov et al., 5 (LE).
A. rigida (Buch.-Ham. ex Sm.) P.F. Hunt
LAOS, Vientiane prov., Kasi distr., Tam Tai village, about 10 km to the NW of Kasi town, 19°12'57"N 102°14'59"E, 500-650 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 766 (CPC, NHOL, NUOL).
*Acanthephippium Blume ex Endl.
*A. striatum Lindl.
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 161 (CPC, NHOL, NUOL). LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt, 17°35'13.2" N, 105°47'49.8" E, 1000-1300 m, 9 March 2013, L. Averyanov et al., LA-VN298, Fig. 1, A (CPC, NHOL, NUOL).
Acriopsis Reinw. ex Blume
A. indica C. Wright
LAOS, Saravan prov., Ta Oy distr., to the SW of Sa Mouay town, near Thong Hang village, 15°37'30.9" N, 106°12'26.5" E, 650-700 m, 4 March 2013, L. Averyanov et al., LA-VN 217 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Vang Vieng distr., Phoudindeng village, 1-2,5 km to the E of Vang Vieng town, 18°57'48.7" N, 102°27'34.0" E, 400 m, 13 March 2013, N.T. Hiep et al., LA-VN 343 (CPC, NHOL, NUOL).
+A. liliifolia (J.Koenig) Seidenf.
CAMBODIA, to the N of Sianukwille town, Kaoh Rong Samoloem Khong Island in Siam Gulf, 10°36'45" N, 103°18'38" E, 20 Nov. 2011, T. Maisak, L. Osinovez, M. Telepova s.n. (LE).
Aerides Lour.
+A. crassifolia Par. ex Burb.
CAMBODIA, eastern part of Cardamom Mountains, Phnom Aural mt, 23 Nov. 2012. T. Maisak et al., 961 (LE).
A. rosea Lodd.
LAOS, Vientiane prov., Kasi distr., Tam Tai village, about 10 km to the NW of Kasi town, 19°12'57" N, 102°14'59" E, 500-650 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 758 (CPC, NHOL, NUOL).
Agrostophyllum Blume
*A. callosum Rchb. f.
LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 1400 m, 9 March 2013, L. Averyanov et al., LA-VN 323, Fig. 1, B (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Thong Mout village, 19°23'27.3" N, 102°08'21.3" E, 1800 m, 20 March 2013, N.T. Hiep et al., LA-VN 656 (CPC, NHOL, NUOL).
A. planicaule (Lindl.) Rchb. f.
LAOS, Vientiane prov., Vang Vieng distr., Na Khun Village, around point 18°52'28" N, 102°24'21" E, 300 m, 21 Jan. 2009, O. Souliya et al., LA-VN58 (CPC). LAOS, Vientiane prov., Vang Vieng distr., Nathong village, about 5 km to the W of Vang Vieng town, Tham Kang mt., 18°55'51.4" N, 102°23'50.6" E, 300-500 m, 14 March 2013, N.T. Hiep et al., LA-VN376 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Tam Tai village, about 10 km to the NW of Kasi town, 19°12'57" N, 102°14'59" E, 500-650 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 745 (CPC, NHOL, NUOL).
Appendicula Blume
A. hexandra (J. Koenig) J.J. Sm.
CAMBODIA, Bokor, 24 Nov. 2012, T. Maisak et al., 922 (LE).
A. torta Blume
LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon mt., 18°56'11.5" N, 102°20'05.0" E, 800-900 m, 15 March 2013, N.T. Hiep et al., LA-VN 474 (CPC, NHOL, NUOL).
Arachnis Blume
A. labrosa (Lindl. et Paxton) Rchb. f.
LAOS, Vientiane prov., Vang Vieng distr., Na Khun Village, around point 18°52'28" N, 102°24'21" E, 300 m, 21 Jan. 2009, O. Souliya et al., LA-VN 81 (CPC). LAOS, Attapeu prov., Saysettha distr., Dong Am Pham N.P.A., to the N of Paosamphanmixay village, 14°51'53.4" N, 107°11'38.2" E, 178 m, 28 February 2013, L. Averyanov et al., LA-VN 116 (CPC, NHOL, NUOL). LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 700 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 164 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Thong Mout village, 19°26'51.5" N, 102°07'45.8" E,
1550-1650 m, 20 March 2013, N.T. Hiep et al., LA-VN 608 (CPC, NHOL, NUOL).
Arundina Blume
A. graminifolia (D. Don) Hochr.
CAMBODIA, Kampot prov., Phnom Bokor
N.P., 10°37'92.3 N, 104°01'14.3 E, 21 Dec. 2012, E.L. Konstantinov et al, 45P-C-GPS042 (LE). LAOS, Attapeu prov., Saysettha distr., Dong Am Pham N.P.A., to the E of Paosamphanmixay village, 14°48'24.8" N, 107°24'23.2" E, 600-700 m, 28 Feb. 2013, L. Averyanov et al, LA-VN111 (CPC, NHOL, NUOL).
Brachypeza Garay
B. laotica (Seidenf.) Seidenf.
LAOS, Vientiane prov., Vang Vieng distr., Nathong village, about 5 km to the W of Vang Vieng town, Tham Kang mt., 18°55'51.4" N, 102°23'50.6" E, 300-400 m, 14 March 2013, N.T. Hiep et al., LA-VN 425 (CPC, LE, NHOL, NUOL).
Bromheadia Lindl.
B. finlaysoniana (Lindl.) Miq.
CAMBODIA, Kampot prov., Phnom Bokor N.P., 10°39'63.9 N, 104°03'24.8 E, 17 Dec. 2011, E.L. Konstantinov et al., 2b (LE).
Bulbophyllum Thouars
B. affine Wall. ex Lindl.
LAOS, Saravan prov., Ta Oy distr., to the SW of Sa Mouay town, near Thong Hang village, 15°37'30.9" N, 106°12'26.5" E, 650-700 m, 4 March 2013, L. Averyanov et al, LA-VN219 (CPC, NHOL, NUOL).
*B. apodum Hook. f.
LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon mt., 18°56'11.5" N, 102°20'05.0" E, 800-900 m, 15 March 2013, N.T. Hiep et al., LA-VN 482 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Tam Tai village, about 10 km to the NW of Kasi town, 19°12'57" N, 102°14'59" E, 500650 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 765 (CPC, NHOL, NUOL).
B. blepharistes Rchb. f.
LAOS, Attapeu prov., Saysettha distr., Dong Am Pham N.P.A., to the N of Paosamphanmixay village, 14°51'53.4" N, 107°11'38.2" E, 200 m, 1 March 2013, L. Averyanov et al., LA-VN 133 (CPC, NHOL, NUOL). LAOS, Saravan area, 100-200 m, 6 March 2013, L. Averyanov et al., LA-VN 325 (CPC, NHOL, NUOL).
B. dissitiflorum Seidenf.
LAOS, Borikhamxai prov., Khamkeut distr., Dan Khum Ngan locality, Watershed Managing
Protected Authority (WMPI) region, 17°57'32" N, 105°01'05" E, 538 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 19 (CPC). LAOS, Saravan prov., Ta Oy distr., to the SW of Sa Mouay town, near Thong Hang village, 15°37'30.9" N, 106°12'26.5" E, 650700 m, 4 March 2013, L. Averyanov et al., LA-VN 215 (CPC, NHOL, NUOL).
**B. konstantinovii Aver., sp. nov. (sect. Macrocaulia (Blume) Aver.)
Described from S. CAMBODIA ("CAMBODIA, Kampot prov., Phnom Bokor N.P. Epiphyte. 10°37'92.3 N, 104°01'14.3 E). Type ("21 Dec. 2012. E.L. Konstantinov et al., 051P-C-GPS042") - LE (holotype).
Dwarf creeping epiphyte. Rhizome thin, wiry, young greenish, later whitish-gray, 0.5-1 mm wide, with numerous pseudobulbs distant on 1-5 cm and 3-4 wiry, whitish flexuose roots at pseudobulb base. Pseudobulbs light olive, yellowish-green to green, ovate, 4-8(10) mm tall, 2-6 mm wide, often oblique, slightly bending to rhizome, longitudinally irregularly grooved and wrinkled, with 1 apical leaf. Leaves coriaceous, narrowly ovate to ovate, 8-22 x 3-8 mm, conduplicate, obtuse, subsessile or with very short petiole. Inflorescence arising from the base of pseudobulb, 1.5-2.5 cm long, with 1 terminal flower, on ascending, filiform, sometime slightly flexuose, light yellowish-green, glabrous stalk 1-1.8 cm long, with one small bract at the base. Bract hyaline, goblet-shaped, 0.5-1 mm long, 0.3 mm in diam., embracing apex of inflorescence stalk. Pedicel and ovary light green, glabrous, filiform, 5-10 mm long; ovary 0.2 mm wide. Flowers widely opening, 1 cm across spreading lateral sepals. Sepals sub-similar, light dull-yellowish with broad purple-brown stripes, 5-6 x 1.5-1.8 mm, acute, with 3 distinct nerves; median sepal elliptic, directed forward; lateral sepals narrowly ovate, spreading, slightly longer and wider, oblique at the base. Petals directed forward, brightly yellow, oblique ovate, acute, 1.6-2 x 1-1.2 mm, with 1 nerve. Lip brightly yellow, simple, without auricles, elliptic, 3-4 x 1-1.5 mm, at the base with narrowing strongly bending neck, jointed with column foot apex by semi-movable articulation; lip blade with 3 thick nerves, fleshy along margin. Column brightly yellow, erect, 0.8 x 0.5 mm, at the apex with 2 long erect, straight, acute stelidia 0.8 mm long; column foot forward curved, apically broadening into cuplike cordate apex 1 mm long and wide. Operculum yellow, cup-like, half ovoid, 0.4 mm long, with short broad beak. Pollinia 2, globular. Fig. 1, C; 2.
Etymology: Species is named after its discoverer - Dr. E.L. Konstantinov.
Flowering time: November - December.
Ecology: Epiphyte, 100-200 m a.s.l.
Distribution: S. CAMBODIA, Kampot prov. (Phnom Bokor N.P.). Endemic.
Notes: Morphologically new species may be most close to Bulbophyllum simplicilabellum Seidenf. and B. didymotropis Seidenf. described from Thailand, but distinctly differs in 3-nerved sepals, broadly ovate, oblique, acute petals, broad cup-like, cordate broadening of column foot apex and inflated fleshy margin of the lip.
B. lasiochilum Parish et Rchb. f.
LAOS, Borikhamxai prov., Khamkeut distr., Phone Sa At village, 18°03'38" N, 105°02'28" E, 635 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 26 (CPC, LE).
B. orectopetalum Garay, Hamer et Siegerist
CAMBODIA, Kampot prov., Phnom Bokor N.P., 10°37'92.3 N, 104°01'14.3 E, 21 Dec. 2012, E.L. Konstantinov et al., 28P-C-GPS042 (LE). LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon mt., 18°56'11.5" N, 102°20'05.0" E, 800-900 m, 15 March 2013, N.T. Hiep et al., LA-VN 464 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1200 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 790 (CPC, NHOL, NUOL).
+B. parviflorum Par. et Rchb. f.
CAMBODIA, to the N of Sianukwille town, Kaoh Rong Samoloem Khong Island in Siam Gulf, 10°36'45" N, 103°18'38" E, 19 Nov. 2011, T. Maisak, M. Telepova, L. Osinovets, 847, Fig. 1, D (LE).
*B. psychoon Rchb. f.
LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 800 m, 9 March 2013, L. Averyanov et al., LA-VN 319 (CPC, LE, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Thong Mout village, 19°26'51.5" N, 102°07'45.8" E, 1550-1650 m, 20 March 2013, N.T. Hiep et al., LA-VN 613, Fig. 1, E (CPC, LE, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1600 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 795 (CPC, NHOL, NUOL).
B. reptans (Lindl.) Lindl. ex Wall.
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 175 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr.,
Thong Mout village, Pudang Ridge, 19°23'33.7" N, 102°08'05.7" E, 1950-2000 m, 22 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 703 (CPC, NHOL, NUOL).
+B. rufilabrum Par. ex Hook. f.
CAMBODIA, Koh Rong island, 10°45'90.9 N, 103°13'33.1 E, 15 Dec. 2011, E. Konstantinov et al., 3 (LE). LAOS, Phu Khao Khuay N.P., Tad Leuk waterfall, 18°23'72.3 N, 103°04'32.8 E, 12 Nov. 2011, E. Konstantinov et al., 1a (LE). LAOS, Nam Lik, 18°36'80.8 N, 102°24'60.5 E, 24 Nov. 2011, E. Konstantinov et al., 4 (LE). LAOS, Vientiane prov., Phou Khao Khouay N.P., Tad Leuk waterfall, 18°23'99.1 N, 103°04'03.1 E, 28 Nov. 2012, E.L. Konstantinov et al., 53OR-L-GPS005 (LE).
B. rufinum Rchb. f.
LAOS, Attapeu prov., Saysettha distr., Dong Am Pham N.P.A., to the N of Paosamphanmixay village, 14°51'53.4" N, 107°11'38.2" E, 200 m, 1 March 2013, L. Averyanov et al., LA-VN 134 (CPC, NHOL, NUOL).
+B. tricornoides Seidenf.
CAMBODIA, to the N of Sianukwille town, Kaoh Rong Samoloem Khong Island in Siam Gulf, 10°36'45" N, 103°18'38" E, 20 Nov. 2011, T. Maisak, L. Osinovez, M. Telepova, s.n. (LE).
*B. umbellatum Lindl.
LAOS, Vientiane prov., Kasi distr., Thong Mout village, 19°26'51.5" N, 102°07'45.8" E, 1550-1650 m, 20 March 2013, N.T. Hiep et al., LA-VN 612, Fig. 1, F (CPC, LE, NHOL, NUOL).
Calanthe Ker Gawl.
+C. cardioglossa Schltr.
CAMBODIA, Kampot prov., Phnom Bokor N.P., 10°37'92.3 N, 104°01'14.3 E, 21 Dec. 2012, E.L. Konstantinov et al, 44P-C-GPS042, Fig. 1, G (LE).
Callostylis Blume
C. rigida Blume
LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon mt., 18°56'11.5"N 102°20'05.0"E, 800-900 m, 15 March 2013, N.T. Hiep et al., LA-VN 476 (CPC, NHOL, NUOL).
Cephalantheropsis Guillaumin
C. obcordata (Lindl.) Ormerod
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 160 (CPC, NHOL, NUOL).
Fig. 1. New orchids in the flora of Cambodia and Laos. A - Acanthephippium striatum Lindl. (L. Averyanov et al., LA-VN 298). B - Agrostophyllum callosum Rchb. f. (L. Averyanov et al., LA-VN 323). C - Bulbophyllum konstantinovii Aver. (type specimen, E.L. Konstantinov et al., 051P-C-GPS042). D - B. parviflorum Par. et Rchb. f. (T. Maisak, M. Telepova, L. Osinovets, 847). E - B. psychoon Rchb. f. (N.T. Hiep et al., LA-VN 613). F - B. umbellatum Lindl. (N.T. Hiep et al., LA-VN 612). G: Calanthe cardioglossa Schltr. (E.L. Konstantinov et al., 44P-C-GPS042). H - Cheirostylis griffithii Lindl. (L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 782). I - C. pusilla Lindl. (E.L. Konstantinov et al., 14bOR-L-GPS018). Photos by Nguyen Sinh Khang (A, H), Pham Van The (B), E. Konstantinov (C, G, I) and L. Averyanov (D, E, F).
Fig. 2. Bulbophyllum konstantinovii Aver. a - flowering plant; b - flattened flower, half-side view; c - flattened flower, frontal view; d - lip, half-side view; e - column, side view. All drawings from the type (Konstantinov et al. 051P-C-GPS042) by L. Averyanov.
Ceratostylis Blume
C. himalaica Hook. f.
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 174 (CPC, NHOL, NUOL).
C. subulata Blume
CAMBODIA, Kampot prov., Phnom Bokor N.P., 10°37'92.3 N, 104°01'14.3 E, 21 Dec. 2012, E.L. Konstantinov et al., 27P-C-GPS042 (LE).
Cheirostylis Blume
C. chinensis Rolfe
LAOS, Vientiane prov., Vang Vieng distr., Na Khun Village, 18°52'28" N, 102°24'21" E, 300 m, 21 Jan. 2009, O. Souliya et al., LA-VN 78 (CPC).
*C. griffithii Lindl.
LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1500-1750 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 782, Fig. 1, H (CPC, LE, NHOL, NUOL).
*C. pusilla Lindl.
LAOS, Luang Namtha prov., Ban Nam Eng, 21°43'49.7 N, 101°09'23.9 E, 3 Dec. 2012, E.L. Konstantinov et al, 14bOR-L-GPS018, Fig. 1, I (LE).
*C. spathulata J.J. Sm.
LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon mt., 18°56'11.5" N, 102°20'05.0" E, 300-900 m, 15 March 2013, N.T. Hiep et al., LA-VN 487 (CPC, LE, NHOL, NUOL). LAOS, Vientiane prov., Vang Vieng distr., Na Po village,
about 12 km to the W of Vang Vieng town, Pa Nang Oua mt., 18°55'36.4" N, 102°20'44.6" E, 350-450 m, 17 March 2013, N.T. Hiep etal., LA-VN509, Fig. 3, A (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Tam Tai village, about 10 km to the NW of Kasi town, 19°12'57" N, 102°14'59" E, 500-650 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 734 (CPC, NHOL, NUOL).
*C. thailandica Seidenf.
LAOS, Vientiane prov., Vang Vieng distr., Nathong village, about 5 km to the W of Vang Vieng town, 18°55'34.2" N, 102°22'58.4" E, 300 m, 13 March 2013, N.T. Hiep et al., LA-VN 351a, Fig. 3, B (CPC, LE, NHOL, NUOL). LAOS, Vientiane prov., Vang Vieng distr., Na Po village, about 12 km to the W of Vang Vieng town, Pa Nang Oua mt., 18°55'44.9" N, 102°20'20.1" E, 500-1000 m, 17 March 2013, N.T. Hiep et al., LA-VN 513 (CPC, LE, NHOL, NUOL).
Cleisostoma Raf.
C. fuerstenbergianum Kraenzl.
LAOS, Borikhamxai prov., Khamkeut distr., Phone Sa At village, 18°03'38" N, 105°02'28" E, 635 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 37 (CPC).
C. rostratum (Lindl.) Garay
LAOS, Vientiane prov., Phou Khao Khouay N.P., Tad Leuk waterfall, 18°23'99.1 N, 103°04'03.1 E, 28 Nov. 2012, E.L. Konstantinov et al., 11OR-L-GPS005 (LE). LAOS, Vientiane prov., Vang Vieng distr., Nathong village, about 5 km to the W of Vang Vieng town, Tham Kang mt., 18°55'51.4" N, 102°23'50.6" E, 300-500 m, 14 March 2013, N.T. Hiep et al., LA-VN 384 (CPC, NHOL, NUOL).
C. simondii (Gagnep.) Seidenf.
LAOS, Phu Khao Khuay N.P., Tad Leuk waterfall, 18°23'72.3 N, 103°04'32.8 E, 12 Nov. 2011, E. Konstantinov et al., 1b (LE).
Coelogyne Lindl.
C. fimbriata Lindl.
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 154 (CPC, NHOL, NUOL).
C. flaccida Lindl.
LAOS, Vientiane prov., Vang Vieng distr., Na Po village, about 12 km to the W of Vang Vieng town, Pa Nang Oua mt., 18°55'44.9" N, 102°20'20.1" E, 500-1000 m, 17 March 2013, N.T. Hiep et al., LA-VN 515 (CPC, LE, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Namken village,
Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1500-1750 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 768 (CPC, LE, NHOL, NUOL).
* C. virescens Rolfe
LAOS, Attapeu prov., Saysettha distr., Dong Am Pham N.P.A., to the N of Paosamphanmixay village, 14°51'53.4" N, 107°11'38.2" E, 178 m, 28 Feb. 2013, L. Averyanov et al., LA-VN 113, Fig. 3, C (CPC, LE, NHOL, NUOL).
C. viscosa Rchb. f.
LAOS, Vientiane prov., Vang Vieng distr., Na Khun Village, 18°52'28" N, 102°24'21" E, 400600 m, 21 Jan. 2009, O. Souliya et al., LA-VN 101 (CPC).
Collabium Blume
C. chinense (Rolfe) Tang et F T. Wang
LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 900 m, 9 March 2013, L. Averyanov et al., LA-VN 304 (CPC, NHOL, NUOL).
Corymborkis Thouars
C. veratrifolia (Reinw.) Blume
LAOS, Vientiane prov., Vang Vieng distr., Na Khun Village, 18°52'28" N, 102°24'21" E, 300 m, 21 Jan. 2009, O. Souliya et al., LA-VN 74 (CPC). LAOS, Vientiane prov., Vang Vieng distr., Na Po village, about 12 km to the W of Vang Vieng town, Pa Nang Oua mt., 18°55'36.4" N, 102°20'44.6" E, 350-450 m, 17 March 2013, N.T. Hiep et al., LA-VN 494 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 650-800 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 789 (CPC, NHOL, NUOL).
Cymbidium Sw.
C. aloifolium (L.) Sw.
LAOS, Kham Mouan prov., Bounlapha distr., Nam Boua Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°33'43.6" N, 105°45'08.3" E, 230 m, 10 March 2013, L. Averyanov et al., LA-VN 328 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Vang Vieng distr., Nathong village, about 5 km to the W of Vang Vieng town, Tham Kang mt., 18°55'51.4" N, 102°23'50.6" E, 300-500 m, 14 March 2013, N.T. Hiep et al., LA-VN 390 (CPC, NHOL, NUOL).
*C. eburneum Lindl. var. eburneum
LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4"
E, 1500-1750 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN804, Fig. 3, D (CPC, LE, NHOL, NUOL).
*C. eburneum Lindl. var. longzhouense Z.J. Liu et S.C. Chen
LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1500-1750 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 803, Fig. 3, E (CPC, LE, NHOL, NUOL).
C. lancifolium Hook.
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 177 (CPC, NHOL, NUOL). LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 1100 m, 9 March 2013, L. Averyanov et al., LA-VN 300 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1500-1750 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 786 (CPC, NHOL, NUOL).
C. lowianum (Rchb. f.) Rchb. f.
LAOS, Vientiane prov., Kasi distr., Thong Mout village, 19°26'51.5" N, 102°07'45.8" E, 1550-1650 m, 20 March 2013, N.T. Hiep et al., LA-VN 604 (CPC, LE, NHOL, NUOL).
Dendrobium Sw.
D. cariniferum Rchb. f.
LAOS, Borikhamxai prov., Khamkeut distr., Phone Sa At village, 18°03'38" N, 105°02'28" E, 635 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 29 (CPC). LAOS, Phongsali prov., Muong May distr., 21°12'32" N, 102°53'44" E, 1250-1400 m, 22 April 2011, L. Averyanov, P. V. The, CPC 2429 ((CPC).
D. crepidatum Lindl.
LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon mt., 18°56'11.5" N, 102°20'05.0" E, 800-900 m, 15 March 2013, N.T. Hiep et al., LA-VN 481 (CPC, NHOL, NUOL).
D. cumulatum Lindl.
CAMBODIA, to the N of Sianukwille town, Kaoh Rong Samoloem Khong Island in Siam Gulf, 10°36'45" N, 103°18'38" E, 20 Nov. 2011, T Maisak, L. Osinovez, M. Telepova, 835, 836 (LE).
D. dalacourii Guillaumin
LAOS, Attapeu prov., Saysettha distr., Dong Am Pham N.P.A., to the N of Paosamphanmixay village, 14°51'53.4" N, 107°11'38.2" E, 200 m, 1
March 2013, L. Averyanov et al., LA-VN 130 (CPC, NHOL, NUOL).
D. draconis Rchb. f.
CAMBODIA, eastern part of Cardamom Mountains, Phnom Aural mt., 23 Nov. 2012, T. Maisak et al., 944 (LE).
D. findleyanum Par. et Rchb. f.
LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1600 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 792 (CPC, NHOL, NUOL).
D. gratiosissimum Rchb. f.
LAOS, Borikhamxai prov., Khamkeut distr., Dan Khum Ngan locality, Watershed Managing Protected Authority region, 17°57'32" N, 105°01'05" E, 538 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 21b (CPC, LE). LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1200 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 772 (CPC, LE, NHOL, NUOL).
+D. indivisum (Blume) Miq.
CAMBODIA, eastern part of Cardamom Mountains, Phnom Aural mt., 23 Nov. 2012, T. Maisak et al., 953, 955, Fig. 3, F (LE).
D. keithii Ridl.
CAMBODIA, to the N of Sianukwille town, Kaoh Rong Samoloem Khong Island in Siam Gulf, 10°36'45" N, 103°18'38" E, 20 Nov. 2011, T. Maisak, L. Osinovez, M. Telepova, s.n., Fig. 3, G (LE).
*D. kontumense Gagnep.
LAOS, Borikhamxai prov., Khamkeut distr., Dan Khum Ngan locality, Watershed Managing Protected Authority region, 17°57'32" N, 105°01'05" E, 538 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 21a, Fig. 3, H (CPC, LE).
D. monticola Hunt et Summerh.
LAOS, Borikhamxai prov., Khamkeut distr., Phone Sa At village, 18°02'09" N, 105°02'31" E, 618 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 39 (CPC).
D. multilineatum Kerr
LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 1300-1425 m, 9 March 2013, L. Averyanov et al., LA-VN256 (CPC, LE, NHOL, NUOL).
D. nathanielis Rchb. f.
LAOS, Attapeu prov., Saysettha distr., Dong Am Pham N.P.A., to the N of Paosamphanmixay village, 14°51'53.4" N, 107°11'38.2" E, 178 m, 28 Feb. 2013, L. Averyanov et al., LA-VN 114 (CPC, LE, NHOL, NUOL).
Fig. 3. New orchids in the flora of Cambodia and Laos. A - Cheirostylis spathulata J.J. Sm. (N.T. Hiep et al., LA-VN 509). B - C. thailandica Seidenf. (N.T. Hiep et al., LA-VN 351a). C - Coelogyne virescens Rolfe (L. Averyanov et al., LA-VN 113). D - Cymbidium eburneum Lindl. var. eburneum (L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 804). E - C. eburneum Lindl. var. longzhouense Z.J. Liu et S.C. Chen (L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 803). F - Dendrobium indivisum (Blume) Miq. (T. Maisak et al., 953, 955). G - D. keithii Ridl. (T. Maisak, L. Osinovez, M. Telepova, s.n.). H - D. kontumense Gagnep. (S. Bounphanmy et al., LA-VN 21a). I - D. scabrilingue Lindl. (E.L. Konstantinov et al., 29P-C-GPS042). Photos by L. Averyanov (A, B, C, F, G, H), Nguyen Sinh Khang (D, E) and E. Konstantinov (I).
D. oligophyllum Gagnep.
LAOS, Vientiane prov., Vang Vieng distr., Nathong village, about 5 km to the W of Vang Vieng town, Tham Kang mt., 18°55'51.4" N, 102°23'50.6" E, 300-500 m, 14 March 2013, N.T. Hiep et al., LA-VN 383 (CPC, LE, NHOL, NUOL).
D. parcum Rchb. f.
LAOS, Borikhamxai prov., Khamkeut distr., Dan Khum Ngan locality, Watershed Managing Protected Authority region, 17°57'32" N, 105°01'05" E, 538 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 20 (CPC). LAOS, Saravan prov., Ta Oy distr., to the SW of Sa Mouay town, near Thong Hang village, 15°37'30.9"N 106°12'26.5"E, 650700 m, 4 March 2013, L. Averyanov et al., LA-VN 222 (CPC, NHOL, NUOL).
+D. scabrilingue Lindl.
CAMBODIA, Kampot prov., Phnom Bokor N.P., 10°37'92.3 N, 104°01'14.3 E, 21 Dec. 2012, E.L. Konstantinov et al., 29P-C-GPS042, Fig. 3, I (LE).
D. secundum (Blume) Lindl.
LAOS, Attapeu prov., Saysettha distr., Dong Am Pham N.P.A., to the N of Paosamphanmixay village, 14°51'53.4" N, 107°11'38.2" E, 200 m, 1 March 2013, L. Averyanov et al., LA-VN 132 (CPC, NHOL, NUOL).
+D. setifolium Ridl.
CAMBODIA, Kampot prov., Phnom Bokor N.P., 10°37'92.3 N, 104°01'14.3 E, 21 Dec. 2012. E.L. Konstantinov et al., 35P-C-GPS042 (LE), 42P-C-GPS042, Fig. 4, A (LE).
D. signatum Rchb. f.
LAOS, Borikhamxai prov., Khamkeut distr., Dan Khum Ngan locality, Watershed Managing Protected Authority region, 17°57'32" N, 105°01'05" E, 538 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN21d (CPC, LE).
D. spatella Rchb. f.
LAOS, Borikhamxai prov., Khamkeut distr., Phone Sa At village, 18°03'38" N, 105°02'28" E, 635 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 38 (CPC).
D. wardianum R. Warner
LAOS, Vientiane prov., Kasi distr., Thong Mout village, Pudang Ridge, 19°23'33.7" N, 102°08'05.7" E, 1950-2000 m, 22 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 705 (CPC, LE, NHOL, NUOL).
*Didymoplexiopsis Seidenf.
*D. khiriwongensis Seidenf.
LAOS, Attapeu prov., Saysettha distr., Dong Am Pham N.P.A., to the E of Paosamphanmixay village, 14°48'24.8" N, 107°24'23.2" E, 700-20 m, 28 Feb. 2013, L. Averyanov et al., LA-VN 110, Fig. 4, B (LE).
Doritis Lindl.
D. pulcherrima Lindl.
LAOS, Borikhamxai prov., Khamkeut distr., Dan Khum Ngan locality, Watershed Managing Protected Authority region, 17°57'32" N, 105°01'05" E, 538 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 21 (CPC).
*Eclecticus P. OByrne
*E. chungii P. O Byrne
LAOS, Vientiane prov., Vang Vieng distr., Nathong village, about 5 km to the W of Vang Vieng town, Tham Kang mt., 18°55'51.4" N, 102°23'50.6" E, 300-500 m, 14 March 2013, N.T. Hiep et al., LA-VN 385c, Fig. 4, C, D (LE).
Epigeneium Gagnep.
*E. chapaense Gagnep.
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 193 (CPC, NHOL, NUOL).
Epipogium J.G. Gmel. ex Borkh.
E. roseum (D. Don) Lindl.
LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon mt., 18°56'11.5" N, 102°20'05.0" E, 800-900 m, 15 March 2013, N.T. Hiep et al., LA-VN 465 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Vang Vieng distr., Nam Pe village, about 12 km to the W of Vang Vieng town, 18°58'41.0" N, 102°18'54.1" E, 400 m, 18 March 2013, N.T. Hiep et al., LA-VN586 (CPC, NHOL, NUOL).
Eria Lindl.
E. boniana (Gagnep.) Tang et F.T. Wang
LAOS, Vientiane prov., Kasi distr., Thong Mout village, 19°26'51.5" N, 102°07'45.8" E, 1550-1650 m, 20 March 2013, N.T. Hiep et al., LA-VN 609 (CPC, NHOL, NUOL).
* E. calcarea V.N. Long et Aver.
LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon mt., 18°56'11.5" N, 102°20'05.0" E, 800-900 m, 15 March 2013, N.T. Hiep et al., LA-VN 480 (CPC, NHOL, NUOL).
*E. corneri Rchb. f.
LAOS, Vientiane prov., Vang Vieng distr., Na Khun Village, 18°52'28" N, 102°24'21" E, 300 m, 21 Jan. 2009, O. Souliya et al., LA-VN 64 (CPC). LAOS, Vientiane prov., Kasi distr., Tam Tai village, about 10 km to the NW of Kasi town, 19°12'57"
N, 102°14'59" E, 500-650 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 764 (CPC, NHOL, NUOL).
+E. lasiopetala (Willd.) Ormerod
CAMBODIA, Kampot prov., Phnom Bokor N.P., 10°37'92.3 N, 104°01'14.3 E, 21 Dec. 2012, E.L. Konstantinov et al., 39P-C-GPS042, Fig. 4, E (LE). LAOS, Borikhamxai prov., Khamkeut distr., Dan Khum Ngan locality, Watershed Managing Protected Authority region, 17°57'32" N, 105°01'05" E, 538 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 13 (CPC). LAOS, Saravan prov., Ta Oy distr., to the SW of Sa Mouay town, near Thong Hang village, 15°37'30.9" N,, 106°12'26.5" E, 650-700 m, 4 March 2013, L. Averyanov et al., LA-VN 218 (CPC, NHOL, NUOL).
+E. muscicola (Lindl.) Lindl.
CAMBODIA, Bokor N.P., Bokor mt., 1047 m, 10°38'17" N, 104°00'46" E, 24 Nov. 2012, T Maisak et al., 925, Fig. 4, F (LE).
E. paniculata Lindl.
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 176 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1500-1750 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 801 (CPC, NHOL, NUOL).
E. pannea Lindl.
CAMBODIA, Kampot prov., Phnom Bokor N.P., 10°37'92.3 N, 104°01'14.3 E, 21 Dec. 2012, E.L. Konstantinov et al., 41P-C-GPS042 (LE). LAOS, Borikhamxai prov., Khamkeut distr., Dan Khum Ngan locality, Watershed Managing Protected Authority region, 17°57'32" N, 105°01'05" E, 538 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 12 (CPC). LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 191 (CPC, NHOL, NUOL). LAOS, Saravan prov., Ta Oy distr., to the SW of Sa Mouay town, near Thong Hang village, 15°37'30.9" N, 106°12'26.5" E, 650-700 m, 4 March 2013, L. Averyanov et al., LA-VN 216 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon mt., 18°56'11.5" N, 102°20'05.0" E, 800-900 m, 15 March 2013, N.T. Hiep et al., LA-VN 471 (CPC, NHOL, NUOL).
E. perpusilla Par. et Rchb. f.
LAOS, Vientiane prov., Vang Vieng distr., Na Po village, about 12 km to the W of Vang
Vieng town, Pa Nang Oua mt., 18°55'44.9" N, 102°20'20.1" E, 700-1000 m, 17 March 2013, N.T. Hiep et al., LA-VN527a (LE).
E. spirodela Aver.
LAOS, Attapeu prov., Saysettha distr., Dong Am Pham N.P.A., to the E of Paosamphanmixay village, 14°48'24.8" N, 107°24'23.2" E, 700-920 m, 28 February 2013, L. Averyanov et al., LA-VN 106 (CPC, NHOL, NUOL). LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt. composed by sandstone, 17°35'13.2" N, 105°47'49.8" E, 1300 m, 9 March 2013, L. Averyanov et al., LA-VN 316 (CPC, NHOL, NUOL).
*E. thao Gagnep.
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 153 (CPC, NHOL, NUOL).
E. truncata Lindl.
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 170 (CPC, LE, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Thong Mout village, Pudang Ridge, 19°23'33.7" N, 102°08'05.7" E, 1950-2000 m, 22 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 706 (CPC, LE, NHOL, NUOL).
Eulophia R. Br.
E. graminea Lindl.
LAOS, Vientiane prov., Vang Vieng distr., vic. of Vang Vieng town, 18°54'58" N, 102°24'52" E, 400-450 m, 24 April 2011, L. Averyanov, P.V. The CPC 2441 (CPC).
Flickingeria A.D. Hawkes
*F. angustifolia (Blume) A.D. Hawkes
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 182, Fig. 4, G (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Tam Tai village, about 10 km to the NW of Kasi town, 19°12'57" N, 102°14'59" E, 500-650 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 752 (CPC, NHOL, NUOL).
Gastrochilus D. Don
*G. calceolaris (Buch.-Ham. ex Sm.) D. Don
LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu
Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 1000-1100 m, 9 March 2013, L. Averyanov et al., LA-VN 303 (CPC, NHOL, NUOL).
*G. pseudodistichus (King et Pantl.) Schltr.
LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1600 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 794 (CPC, NHOL, NUOL).
Goodyera R. Br.
* G. fumata Thwaites
LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 1000 m, 9 March 2013, L. Averyanov et al., LA-VN 301 (CPC, NHOL, NUOL).
*G. hispida Lindl.
LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1500 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 797, Fig. 4, H (CPC, NHOL, NUOL).
*Herpysma Lindl.
*H. longicaulis Lindl.
LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., around point 19°18'45.5" N, 102°22'31.4" E, 1600 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 791 (CPC, LE, NHOL, NUOL).
* Hetaeria Blume
*H. affinis (Griff.) Seidenf. et Ormerod
LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon mt., 18°56'11.5" N, 102°20'05.0" E, 300 m, 15 March 2013, N.T. Hiep et al., LA-VN 429 (CPC, LE, NHOL, NUOL).
Holcoglossum Schltr.
*H. subulifolium (Rchb. f.) Christenson
LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 1400 m, 9 March 2013, L. Averyanov et al., LA-VN 260, Fig. 4, I (CPC, LE, NHOL, NUOL).
Kingidium P.F. Hunt
K. deliciosum (Rchb. f.) H.R. Sweet
LAOS, Vientiane prov., Vang Vieng distr., Nathong village, about 5 km to the W of Vang Vieng town, 18°55'34.2" N, 102°22'58.4" E, 300 m, 13 March 2013, N.T. Hiep et al., LA-VN 351 (CPC, NHOL, NUOL).
*Lecanorchis Blume
*L. vietnamica Aver.
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 171 (CPC, NHOL, NUOL).
Liparis Rich.
*L. balansae Gagnep.
LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt.. 17°35'13.2" N, 105°47'49.8" E, 1425 m, 9 March 2013, L. Averyanov et al., LA-VN 309 (LE).
L. bootanensis Griff.
LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 1200 m, 9 March 2013, L. Averyanov et al., LA-VN 309 (CPC, NHOL, NUOL).
L. nervosa (Thunb.) Lindl.
LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 900 m, 9 March 2013, L. Averyanov et al., LA-VN 296 (CPC, NHOL, NUOL).
* L. pumila Aver.
LAOS, Borikhamxai prov., Khamkeut distr., Phone Sa At village, 18°03'38" N, 105°02'28" E, 635 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 34 (CPC). LAOS, Vientiane prov., Kasi distr., Tam Tai village, about 10 km to the NW of Kasi town, 19°12'57" N, 102°14'59" E, 500-650 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 750 (CPC, NHOL, NUOL).
L. viridiflora (Blume) Lindl.
LAOS, Vientiane prov., Kasi distr., Thong Mout village, 19°26'51.5" N, 102°07'45.8" E, 1550-1650 m, 20 March 2013, N.T. Hiep et al., LA-VN 607 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon mt., 18°56'11.5" N, 102°20'05.0" E, 800-900 m, 15 March 2013, N.T. Hiep et al., LA-VN 479 (CPC, NHOL, NUOL).
Luisia Gaudich.
L. filiformis Hook. f.
LAOS, Attapeu prov., Saysettha distr., Dong Am Pham N.P.A., to the N of Paosamphanmixay village, 14°51'53.4" N, 107°11'38.2" E, 178 m, 28 February 2013, L. Averyanov et al., LA-VN 115 (CPC, LE, NHOL, NUOL).
Fig. 4. New orchids in the flora of Cambodia and Laos. A - Dendrobium setifolium Ridl. (E.L. Konstantinov et al., 35P-C-GPS042). B - Didymoplexiopsis khiriwongensis Seidenf. (L. Averyanov et al., LA-VN 110). C, D - Eclecticus chungii P. O'Byrne (N.T. Hiep et al., LA-VN 385c). E - Eria lasiopetala (Willd.) Ormerod (E.L. Konstantinov et al., 39P-C-GPS042). F - E. muscicola (Lindl.) Lindl. (T. Maisak et al., 925). G - Flickingeria angustifolia (Blume) A.D. Hawkes (L. Averyanov et al., LA-VN 182). H - Goodyera hispida Lindl. (L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 797). I - Holcoglossum subulifolium (Rchb. f.) Christenson (L. Averyanov et al., LA-VN 260). Photos by E. Konstantinov (A, E), Nguyen Sinh Khang (B, G), L. Averyanov (C, D, E, H) and Pham Van The (I).
Micropera Lindl.
*M. poilanei (Guillaumin) Garay
LAOS, Vientiane prov., Vang Vieng distr., Nathong village, about 5 km to the W of Vang Vieng town, Tham Kang mt., 18°55'51.4" N, 102°23'50.6" E, 300-500 m, 14 March 2013, N.T. Hiep etal., LA-VN 377 (CPC, NHOL, NUOL).
Nephelaphyllum Blume
*N. tenuiflorum Blume
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN168 (CPC, NHOL, NUOL).
* Neuwiedia Blume
*N. zollingeri Rchb. f.
LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 500900 m, 9 March 2013, L. Averyanov et al., LA-VN 297 (CPC, NHOL, NUOL).
Oberonia Lindl.
*O. cavaleriei Finet
LAOS, Vientiane prov., Kasi distr., Tam Tai village, about 10 km to the NW of Kasi town, 19°12'57" N, 102°14'59" E, 500-650 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 757 (CPC, NHOL, NUOL).
O. falcata King et Pantl.
LAOS, Borikhamxai prov., Khamkeut distr., Dan Khum Ngan locality, Watershed Managing Protected Authority region, 17°57'32" N, 105°01'05" E, 538 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 17 (CPC).
Ornithochilus (Lindl.) Benth.
O. difformis (Wall. ex Lindl.) Schltr.
LAOS, Phongsali prov., Muong May distr., 21°12'32" N, 102°53'44" E, 1250-1400 m, 22 April 2011, L. Averyanov, P.V. The, CPC 2431 (CPC). LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 167 (CPC, NHOL, NUOL).
Otochilus Lindl.
* O. psudoporrectus Aver.
LAOS, Vientiane prov., Kasi distr., Thong Mout village, Pudang Ridge, 19°23'33.7" N, 102°08'05.7" E, 1950-2000 m, 22 March 2013, L.
Averyanov, N.S. Khang, S. Lorphengsy LA-VN 704 (CPC, LE, NHOL, NUOL).
Panisea (Lindl.) Lindl. P. uniflora (Lindl.) Lindl. CAMBODIA, to the N of Sianukwille town, Kaoh Rong Samoloem Khong Island in Siam Gulf, 10°36'45" N, 103°18'38" E, 19 Nov. 2011, T. Maisak, M. Telepova, L. Osinovets, 907 (LE). LAOS, Borikhamxai prov., Khamkeut distr., Dan Khum Ngan locality, Watershed Managing Protected Authority region, 17°57'32" N, 105°01'05" E, 538 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 21i (CPC, LE). LAOS, Vientiane prov., Vang Vieng distr., Na Khun Village, 18°52'28" N, 102°24'21" E, 400-600 m, 21 Jan. 2009, O. Souliya et al., LA-VN 92 (CPC). LAOS, Vientiane prov., Vang Vieng distr., vic. of Vang Vieng town, 18°54'58" N, 102°24'52" E, 400-450 m, 24 April 2011, L. Averyanov, P.V. The, CPC 2439 (CPC). LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon mt., 18°56'11.5" N, 102°20'05.0" E, 800-900 m, 15 March 2013, N.T. Hiep et al., LA-VN475 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Vang Vieng distr., Na Po village, about 12 km to the W of Vang Vieng town, Pa Nang Oua mt., 18°55'44.9" N, 102°20'20.1" E, 500-1000 m, 17 March 2013, N.T. Hiep et al., LA-VN 515a (CPC, LE, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Tam Tai village, about 10 km to the NW of Kasi town, 19°12'57" N, 102°14'59" E, 500-650 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 761 (CPC, NHOL, NUOL).
Paphiopedilum Pfitzer P. appletonianum (Gower) Rolfe CAMBODIA, Kampot prov., Phnom Bokor N.P. Epiphyte, 10°37'92.3 N, 104°01'14.3 E, 21 Dec. 2012, E.L. Konstantinov et al., 50P-C-GPS042 (LE). LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 178 (CPC, NHOL, NUOL). LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 1200-1300 m, 9 March 2013, L. Averyanov et al., LA-VN 305 (CPC, NHOL, NUOL). *P. canhii Aver. et O. Gruss LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1600 m, 24 March 2013, L. Averyanov, N.S.
Khang, S. Lorphengsy, LA-VN 793, Fig. 5, A, B (CPC, LE, NHOL, NUOL).
P. concolor (Lindl.) Pfitzer
LAOS, Vientiane prov., Kasi distr., Tam Tai village, about 10 km to the NW of Kasi town, 19°12'57" N, 102°14'59" E, 500-650 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 743 (CPC, NHOL, NUOL).
P. dianthum Tang et F T. Wang
LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1500-1750 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 781 (CPC, NHOL, NUOL).
Papilionanthe Schltr.
*P. biswasiana (Ghose et Mukerjee) Garay
LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1500-1750 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 799, Fig. 5, C (CPC, LE, NHOL, NUOL).
Pelatantheria Ridl.
P. ctenoglossum Ridl.
LAOS, Vientiane prov., Kasi distr., Tam Tai village, about 10 km to the NW of Kasi town, 19°12'57" N, 102°14'59" E, 500-650 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 748 (CPC, NHOL, NUOL).
Phaius Lindl.
P. flavus (Blume) Lindl.
LAOS, Vientiane prov., Vang Vieng distr., Na Po village, about 12 km to the W of Vang Vieng town, Pa Nang Oua mt., 18°55'44.9" N, 102°20'20.1" E, 600-900 m, 17 March 2013, N.T. Hiep et al., LA-VN 550 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 10001600 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 779 (CPC, NHOL, NUOL).
Phalaenopsis Blume
*P. wilsonii Rolfe
LAOS, Vientiane prov., Kasi distr., Thong Mout village, 19°26'51.5" N, 102°07'45.8" E, 1550-1650 m, 20 March 2013, N.T. Hiep et al., LA-VN 606, Fig. 5, D (CPC, NHOL, NUOL).
Pholidota Lindl.
P. articulata Lindl.
LAOS, Borikhamxai prov., Khamkeut distr., Phone Sa At village, 18°03'38" N, 105°02'28" E,
635 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 30 (CPC). LAOS, Saravan prov., Ta Oy distr., to the SW of Sa Mouay town, near Thong Hang village, 15°37'30.9" N, 106°12'26.5" E, 650-700 m, 4 March 2013, L. Averyanov et al., LA-VN 221 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon mt., 18°56'11.5" N, 102°20'05.0" E, 800-900 m, 15 March 2013, N.T. Hiep et al., LA-VN477 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1500-1750 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 775 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Tam Tai village, about 10 km to the NW of Kasi town, 19°12'57" N, 102°14'59" E, 500-650 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 763 (CPC, NHOL, NUOL).
P. chinensis Lindl.
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 184 (CPC, NHOL, NUOL). LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 1100 m, 9 March 2013, L. Averyanov et al., LA-VN 318 (CPC, NHOL, NUOL).
P. imbricata Lindl.
LAOS, Borikhamxai prov., Khamkeut distr., Phone Sa At village, 18°03'38" N, 105°02'28" E, 635 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 35 (CPC). LAOS, Attapeu prov., Saysettha distr., Dong Am Pham N.P.A., to the N of Paosamphanmixay village, 14°51'53.4" N, 107°11'38.2" E, 200 m, 1 March 2013, L. Averyanov et al., LA-VN 135 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Vang Vieng distr., Nathong village, about 5 km to the W of Vang Vieng town, Tham Kang mt., 18°55'51.4" N, 102°23'50.6" E, 300-500 m, 14 March 2013, N.T. Hiep et al., LA-VN389 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Tam Tai village, about 10 km to the NW of Kasi town, 19°12'57" N, 102°14'59" E, 500-650 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 760 (CPC, NHOL, NUOL).
P. pallida Lindl.
LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1500-1750 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 780 (CPC, NHOL, NUOL).
Plocoglottis Blume P. bokorensis (Gagnep.) Seidenf. LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 5001000 m, 9 March 2013, L. Averyanov et al., LA-VN 284 (CPC, NHOL, NUOL).
Podochilus Blume *P. oxystophylloides Ormerod LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1200-1750 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 783 (CPC, NHOL, NUOL).
Pomatocalpa Breda P. angustifolium Seidenf. LAOS, Vientiane prov., Vang Vieng distr., Nathong village, about 5 km to the W of Vang Vieng town, Tham Kang mt., 18°55'51.4" N, 102°23'50.6" E, 300-500 m, 14 March 2013, N.T. Hiep et al., LA-VN 385 (CPC, LE, NHOL, NUOL).
Porpax Lindl. P. elwesii (Rchb. f.) Rolfe CAMBODIA, to the N of Sianukwille town, Kaoh Rong Samoloem Khong Island in Siam Gulf, 10°36'104 N 103°18'056 E, 19 Nov. 2011, T. Maisak, M. Telepova, L. Osinovets, 851, Fig. 5, E (LE).
Renanthera Lour. R. coccinea Lour.
LAOS, Vientiane prov., Vang Vieng distr., vic. of Vang Vieng town, 18°54'58" N, 102°24'52" E, 400-450 m, 24 April 2011, L. Averyanov, P.V. The, CPC 2443 (CPC).
Sarcoglyphis Garay S. mirabilis (Rchb. f.) Garay LAOS, Vientiane prov., Vang Vieng distr., Nathong village, about 5 km to the W of Vang Vieng town, Tham Kang mt., 18°55'51.4" N, 102°23'50.6" E, 300-500 m, 14 March 2013, N.T. Hiep et al, LA-VN 385a (CPC, LE, NHOL, NUOL). LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W ofVang Vieng town, Phar Poon mt., 18°56'11.5" N, 102°20'05.0" E, 300-500 m, 15 March 2013, N.T. Hiep et al, LA-VN 467 (CPC, LE, NHOL, NUOL).
Schoenorchis Blume S. gemmata (Lindl.) J.J. Sm. LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March
2013, L. Averyanov et al., LA-VN 186 (CPC, NHOL, NUOL). LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 1400 m, 9 March 2013, L. Averyanov et al., LA-VN 322 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Thong Mout village, 19°24'23.7" N, 102°09'50.2" E, 1760 m, 20 March 2013, N.T. Hiep et al., LA-VN 645 (CPC, NHOL, NUOL).
Smitinandia Holttum
S. micrantha (Lindl.) Holttum
LAOS, Borikhamxai prov., Khamkeut distr., Dan Khum Ngan locality, Watershed Managing Protected Authority region, 17°57'32" N, 105°01'05" E, 538 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 21c (CPC). LAOS, Vientiane prov., Vang Vieng distr., Nathong village, about 5 km to the W ofVang Vieng town, Tham Kang mt., 18°55'51.4" N, 102°23'50.6" E, 300-400 m, 14 March 2013, N.T. Hiep et al., LA-VN423 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Vang Vieng distr., Na Khun Village, 18°52'28" N, 102°24'21" E, 400-600 m, 21 Jan. 2009, O. Souliya et al., LA-VN 84 (CPC).
Spathoglottis Blume
S. affinis de Vriese
LAOS, Phu Khao Khuay N.P., Xang waterfall, Tad Leuk willage, 18°24'05.8 N, 103°03'03.3 E, 12 Nov. 2011, E. Konstantinov et al., 6 (LE).
S. eburnea Gagnep.
CAMBODIA, Kampot prov., Phnom Bokor N.P., 10°37'92.3 N, 104°01'14.3 E, 21 Dec. 2012, E.L. Konstantinov et al., 46P-C-GPS042 (LE). LAOS, Namnor, 18°01'66.1 N, 104°41'45.8 E, Nov. 2011, E. Konstantinov et al., 2a (LE).
Sunipia Lindl.
*S. rimannii (Rchb. f.) Seidenf.
LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1500-1750 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 802, Fig. 5, F (CPC, LE, NHOL, NUOL).
S. scariosa Lindl.
LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1500-1750 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 774 (CPC, NHOL, NUOL).
Tainia Blume
T. longiscapa (Seidenf.) J.J. Wood et A.L.
Lamb
LAOS, Vientiane prov., Vang Vieng distr., Na Po village, about 12 km to the W of Vang Vieng town, Pa Nang Oua mt., 18°55'44.9" N, 102°20'20.1" E, 600-900 m, 17 March 2013, N.T. Hiep et al., LA-VN551 (CPC, NHOL, NUOL).
Thelasis Blume
*T. khasiana Hook. f.
LAOS, Vientiane prov., Kasi distr., Thong Mout village, 19°26'51.5" N, 102°07'45.8" E, 1550-1650 m, 20 March 2013, N.T. Hiep et al., LA-VN 610 (CPC, NHOL, NUOL).
T. pygmaea (Griff.) Blume
LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon mt., 18°56'11.5" N, 102°20'05.0" E, 800-900 m, 15 March 2013 Coll.: N.T. Hiep et al., LA-VN 473 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Vang Vieng distr., Na Khun Village, 18°52'28" N, 102°24'21" E, 400-600 m, 21 Jan. 2009, O. Souliya et al., LA-VN87 (CPC).
Thrixspermum Lour.
T. centipeda Lour.
LAOS, Borikhamxai prov., Khamkeut distr., Dan Khum Ngan locality, Watershed Managing Protected Authority region, 17°57'32" N, 105°01'05" E, 538 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 18 (CPC).
*T. sutepense (Rolfe ex Downie) Tang et FT. Wang
LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1500-1750 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 788, Fig. 5, G (CPC, LE, NHOL, NUOL).
Trias Lindl.
T. nasuta (Rchb. f.) Stapf
LAOS, Saravan prov., Ta Oy distr., to the SW of Sa Mouay town, near Thong Hang village, 15°37'30.9" N, 106°12'26.5" E, 650-700 m, 4 March 2013, L. Averyanov et al., LA-VN 220 (CPC, NHOL, NUOL).
Trichoglottis Blume
T. orchidea (J. Koenig) Garay
LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon mt., 18°56'11.5" N, 102°20'05.0" E, 800-900 m, 15 March 2013, N.T. Hiep et al., LA-VN 466 (CPC, NHOL, NUOL).
*Trichosma Lindl.
*T. simondii Gagnep.
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 185 (CPC, NHOL, NUOL).
*T. suavis Lindl.
LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 1200 m, 9 March 2013, L. Averyanov et al., LA-VN 310 (CPC, NHOL, NUOL).
Trichotosia Blume
T. dasyphylla (Par. et Rchb. f.) Kraenzl.
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 169 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Vang Vieng distr., Phol Xai village, about 8 km to the W of Vang Vieng town, Phar Poon mt., 18°56'11.5" N, 102°20'05.0" E, 800-900 m, 15 March 2013, N.T. Hiep et al., LA-VN 470 (CPC, NHOL, NUOL).
T. pulvinata (Lindl.) Kraenzl.
LAOS, Saravan prov., Sa Mouay distr., to the SEE of Sa Mouay town, elev. from Ta Oy village, 1350 m, 16°08'47.0" N, 106°52'35.4" E, 4 March 2013, L. Averyanov et al., LA-VN 196 (CPC, NHOL, NUOL).
Tropidia Lindl.
T. angulosa (Lindl.) Blume
LAOS, Vientiane prov., Vang Vieng distr., Na Khun Village, 18°52'28" N, 102°24'21" E, 300 m, 21 Jan. 2009, O. Souliya et al., LA-VN 67 (CPC). LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 400-900 m, 9 March 2013, L. Averyanov et al., LA-VN295 (CPC, NHOL, NUOL). LAOS, Kham Mouan prov., Bounlapha distr., Nam Boua Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°33'43.6" N, 105°45'08.3" E, 230 m, 10 March 2013, L. Averyanov et al., LA-VN 329 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Vang Vieng distr., Nathong village, about 5 km to the W of Vang Vieng town, Tham Kang mt., 18°55'51.4" N, 102°23'50.6" E, 300-500 m, 14 March 2013, N.T. Hiep et al., LA-VN 388 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Vang Vieng distr., Na Po village, about 12 km to the W of Vang Vieng town, Pa Nang Oua mt., 18°55'36.4"
Fig. 5. New orchids in the flora of Cambodia and Laos. A, B - Paphiopedilum canhii Aver. et O. Gruss (L.
Averyanov, N.S. Khang, S. Lorphengsy, LA-VN 793). C - Papilionanthe biswasiana (Ghose et Mukerjee) Garay (L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 799). D - Phalaenopsis wilsonii Rolfe (N.T. Hiep et al., LA-VN 606). E - Porpax elwesii (Rchb. f.) Rolfe (T. Maisak, M. Telepova, L. Osinovets, 851). F - Sunipia rimannii (Rchb. f.) Seidenf. (L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN802). G - Thrixspermum sutepense (Rolfe ex Downie) Tang et F.T. Wang (L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 788). H - Zeuxine flava (Wall. ex Lindl.) Trimen (L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 777). I - Z. nervosa Trimen (L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 800). Photos by Nguyen Sinh Khang (A, C, F-I), L. Averyanov (B), Pham Van The (D) and T. Maisak (E).
N, 102°20'44.6" E, 350-450 m, 17 March 2013, N.T. Hiep et al., LA-VN501 (CPC, NHOL, NUOL). LAOS, Vientiane prov., Kasi distr., Tam Tai village, about 10 km to the NW of Kasi town, 19°12'57" N, 102°14'59" E, 500-650 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 741 (CPC, NHOL, NUOL).
T. curcugiloides Lindl.
LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 700900 m, 9 March 2013, L. Averyanov et al., LA-VN 294 (CPC, NHOL, NUOL).
Vanda R. Br.
V. brunnea Rchb. f.
LAOS, Phongsali prov., Muong May distr., 21°12'32" N, 102°53'44" E, 1250-1400 m, 22 April 2011, L. Averyanov, P.V. The, CPC 2432 (CPC).
Vandopsis Pfitzer
V. gigantea (Lindl.) Pfitzer
LAOS, Vientiane prov., Vang Vieng distr., Na Khun Village, 18°52'28" N, 102°24'21" E, 300 m, 21 Jan. 2009, O. Souliya et al., LA-VN82 (CPC). LAOS, Kham Mouan prov., Bounlapha distr., Thong Sam village, Hinnam No N.P.A., Pu Pha Song mt., 17°35'13.2" N, 105°47'49.8" E, 500-700 m, 9 March 2013, L. Averyanov et al., LA-VN 324 (CPC, NHOL, NUOL).
Zeuxine Lindl
*Z. flava (Wall. ex Lindl.) Trimen
LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1500 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 777, Fig. 5, H (CPC, LE, NHOL, NUOL).
*Z. nervosa Trimen
LAOS, Borikhamxai prov., Khamkeut distr., Phone Sa At village, 18°03'38" N, 105°02'28" E, 635 m, 18 Jan. 2009, S. Bounphanmy et al., LA-VN 27 (CPC). LAOS, Luang Namtha prov., Ban Nam Ha, 21°00'15.9 N, 101°24'55.4 E, 2 Dec. 2012, E.L. Konstantinov et al., 14ORa-L-GPS018 (LE). LAOS, Vientiane prov., Kasi distr., Namken village, Phachao mt., 19°18'45.5" N, 102°22'31.4" E, 1500-1750 m, 24 March 2013, L. Averyanov, N.S. Khang, S. Lorphengsy LA-VN 800, Fig. 5, I (CPC, LE, NHOL, NUOL).
Acknowledgements. The author cordially thanks the authorities of the Center for Plant Conservation (Vietnam Union of Science and Technology Associations), National University of Laos and Royal University of Phnom Penh for their key role in organizing the field works. Field and laboratory studies were funded by U.S.A. National Geographic Society, grants "Flora of relict karstic formation of central Laos (Vientiane province, Vang Vieng and Kasi districts)" #2012-2013, "Exploration of primary woods along constructed highway Hanoi - Ho Chi Minh for their sustainable conservation (in limits of Ha Tinh and Nghe An provinces of central Vietnam)" #9129-12 and grant of the American Orchid Society - "Orchid flora of relict karstic formation in central Laos (Vientiane province, Vang Vieng and Kasi districts)". I also grateful to Mr. Nguyen Sinh Khang, Dr. E. Konstantinov, Mr. Pham Van The and Mrs. T. Maisak for their photographs used in the paper and Mr. Andre Schuiteman for fruitful discussion on species identification. I am addressing my particular thanks to Dr. Thierry Deroin for his careful language correction and editing this paper.
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