Sirindhornia monophylla (Collett & Hemsl.) H.A.Pedersen & Suksathan, Nordic J. Bot.

Ormerod, Paul, Kurzweil, Hubert & Watthana, Santi, 2021, Annotated List of Orchidaceae for Myanmar, Phytotaxa 481 (1), pp. 1-262 : 222-223

Sirindhornia monophylla (Collett & Hemsl.) H.A.Pedersen & Suksathan, Nordic J. Bot. 22: 395, 2002 (publ. 2003)

Basionym: Habenaria monophylla Collett & Hemsl., J. Linn. Soc., Bot. 28: 134, 1890. Type:— MYANMAR. Shan State: Taunggyi District , 1200 m, May 1888, Collett 766 (holotype: CAL; isotype: CAL) .

Homotypic synonyms: Orchis monophylla (Collett & Hemsl.) Rolfe, Orchid Rev. 6: 144, 1898. Peristylus monophyllus (Collett & Hemsl.) Kraenzl., Orchid. Gen . Sp. 1: 516, 1898. Ponerorchis monophylla (Collett & Hemsl.) Soó, Acta Bot. Acad. Sci. Hung. 12: 353, 1966. Chusua monophylla (Collett & Hemsl.) P.F.Hunt, Kew Bull. 26: 175, 1971.

Specimens examined:— UPPER MYANMAR. 1888, Collett s.n. ( K). SHAN. Taunggyi District: type; same loc., 1894, Abdul Khalil s.n. ( CAL); same loc., 12 Jun 1911, Robertson 345 ( K); same loc., May 1932, Dickason 1125 ( AMES); same loc., 1525 m, May 1939, Dickason 8391 ( AMES); same loc., Dickason 9363 ( AMES) . WITHOUT LOCALITY. 1897, cult. Veitch s.n. ex Burke s.n. ( K); 1897, cult. RBG Kew s.n. ex Hildebrand s.n. ( K). Reported from Kachin State ,

Sagaing Region, Chin State and Magway and Mandalay regions by Kress et al. (2003: 87; as Ponerorchis monophylla ), but we have not seen material from these areas.

Distribution:— Myanmar, Thailand and southwestern China.