Gastrochilus obliquus (Lindl.) Kuntze, Revis.

Ormerod, Paul, Kurzweil, Hubert & Watthana, Santi, 2021, Annotated List of Orchidaceae for Myanmar, Phytotaxa 481 (1), pp. 1-262 : 135

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https://doi.org/ 10.11646/phytotaxa.481.1.1

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scientific name

Gastrochilus obliquus (Lindl.) Kuntze, Revis.
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Gastrochilus obliquus (Lindl.) Kuntze, Revis. View in CoL Gen . Pl. 2: 661, 1891

Basionym: Saccolabium obliquum Lindl. View in CoL , Gen . Sp. Orchid. Pl.: 223, 1833. Type:— MYANMAR. Mandalay Region: Kyaukse District, 1826, Wallich, Numer. List: no. 7304 (holotype: K-LINDL; isotype: K-W; icon. K).

Heterotypic synonym: Gastrochilus suavis Seidenf., Opera Bot. View in CoL 95: 298, 1988.

Specimens examined:— KACHIN. Putao District: 630 m, 1 Mar 2007, Kurzweil & Saw Lwin KL 2309 (SING [s]), ident. uncertain; same loc., 575 m, 6 Nov 2016, Armstrong et al. 2282 (NY, SING), ident. uncertain; Myitkyina District: 200−210 m, 1 Dec 2005, Murata et al. 041101 (MBK, TI); same loc., 180 m, 12 Mar 2011, Lasi Bawk Naw BW 70 (RAF). MANDALAY. Kyaukse District: type. SHAN. Kyaukme District, 715 m, 12 Nov 2017, Armstrong et al. 3077 (NY); Taunggyi District: fide Nyan Tun (2014: 293; as G. suavis ). WITHOUT LOCALITY. McMillen 144 ( US); Ohtsuka & Hashimoto s.n. (TI), ident. uncertain (as G. dasypogon ).

Distribution:— The central Himalayas, northeastern India, Myanmar, Thailand, Indochina and southwestern China.

Notes:— Gastrochilus bigibbus and G. pechei are close to or conspecific with G. obliquus ; see comments under those species. Nyan Tun (2014: 293) recorded G. suavis from Myanmar, but this taxon is here considered a variant of G. obliquus . In the past, some Gastrochilus specimens from the eastern Himalayas, Thailand and Indochina have been incorrectly referred to the similar G. dasypogon (Sm.) Kuntze , which differs mainly in flower colour and a longer inflorescence ( Seidenfaden 1988: 299–302). We also came across a specimen labelled G. dasypogon , said to have been imported from Burma (Ohtsuka & Hashimoto s.n., TI) and indeed with a slightly elongate inflorescence. However, in view of the absence of a description of the flower colour, there is no clear indication that it is referable to G. dasypogon .

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