Habenaria siamensis Schltr. 1906 SECTION Diphyllae Kraenzl
Plant and Flowers in situ Thailand
Photos by © Kurt Keller
Drawing by © Seidenfaden
Drawing by © Wu Zanghua and Flora of China Vol 25 Illustrations Zhengyi, Raven & Deyuan 2010
LATER
Common Name The Thailand Habenaria
Flower Size .6" [1.5 cm]
Found in southeastern Guizhou province of China and northern Thailand in grassy areas in open forests at elevations of 170 to 1500 meters as a mini-miniature to miniature sized, hot to cool growing terrestrial with 2, basal, adpressed to the ground, cordate to ovate-lanceolate, mucronate leaves that blooms in the later summer on a terminal, lax, rather wide, 3.2 to 5" [8 to 12.5 cm] long, provided with 3 to 4, suberect, lanceolate, acuminate, sometimes with shortly hairy margined sterile bracts, 2 to 10 flowered inflorescence with lanceolate to ovate, acuminate margined, shortly hairy, shorter than the ovary floral bracts and carrying white flowers.
This species, H humistrata, H reniformis, H porphyricola, H humidicola, and H poilanei form a group of similar and possibly conspecific species and need more study to see if they can maintain their separate species status.
Synonyms
References W3 Tropicos, Kew Monocot list , IPNI ;
* Repert. Spec. Nov. Regni Veg. 2: 82 Schlechter 1906
Flore Generale de Indo-Chine Volume 6 Gagnepain 1934;
The Orchids of Thailand Seidenfadden & Smitnand 1959 drawing fide;
The Orchids of Thailand Seidenfaden & Smitinand 1964 corrections;
Contributions to a Revision of the Orchid Flora of Cambodia, Laos and Vietnam Seidenfaden 1975;
Dansk Botanisk Arkiv Bind 31 #3 Orchid Genera in Thailand V Orchidoideae Seidenfaden 1977 drawing fide;
A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2001 photo good;
A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2005 photo good;
Flora of China Vol 25 Zhengyi, Raven & Deyuan 2009;
Flora of China Vol 25 Illustrations Zhengyi, Raven & Deyuan 2010 drawing fide;
Flora of Thailand Vol 12 Part 1 Pederson, Kurzweil, Suddee, & Cribb 2011 drawing fide;
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