Brachycorythis helferi (Rchb. f.) Summerh. 1955 Photo courtesy of David Kuehn

Part sunHot To Cool Late Spring THROUGH Fall

Common Name Helfer's Brachycorythis [Czech Orchid Plant Collector 1800's] - In Thailand Thao khulu, Mangkon khap kaeo, Wan nang bua, Ueang din

Flower Size 1.6 to 2" [4 to 5 cm]

Found in Assam India, Bangladesh, Myanmar, Thailand and Laos as a small to medium sized, hot to cool growing terrestrial species at elevations of 300 to 1600 meters in deciduous mixed forests, bamboo forests and open grasslands with lanceolate or ovate-lanceolate, acuminate leaves and blooms in the late spring through fall on a 3" to 8" long [6 to 20 cm], erect inflorescence with acuminate, lanceolate floral bracts that enclose the several [to 15] flowers.

Synonyms *Gymnadenia helferi Rchb. f. 1872; Gymnadenia sesamoides C.S.P.Parish in B.Grant 1895; Habenaria helferi (Rchb. f.) Hook. f. 1896; Phyllomphax helferi (Rchb.f.) Schltr. 1919; Platanthera helferi (Rchb. f.) Kraenzl. 1900; Phyllomphax sesamoides (C.S.P.Parish) Schltr. 1919

References W3 Tropicos, Kew Monocot list , IPNI ; Otia Botanica Hamburgensia Rchb.f 1878; A Century of Indian Orchids Vol 5 Hooker 1895 as Habenaria helferi drawing fide; The Orchids of Burma Grant 1895/95 as Gymnadenia helferi and Gymnadenia sesamoides; AOS Bulletin Vol 27 No 10 1958 drawing as Habenaria helferi; The Orchids of Thailand Seidenfadden & Smitnand 1959; Manual of Cultivated Orchids Bechtel; Crib & Laurent 1982; Indian Orchids: Guide to Identification and Culture Pradhan 1976; Thai Orchid Species Rakpaibulsombat 1992 photo fide; A Field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2001 photo fide; Wild Orchids in Myanamar Vol 2 Tanaka 2004; A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2005 photo fide; Orchids of India A Glimpse Misra 2007 drawing ok; Flora Of Thailand Orchidaceae Vol 12 Part 1 Pedersen, Kurzweil, Suddee & Cribb 2011 drawing fide

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