Habenaria siamensis Schltr. 1906 SECTION Diphyllae Kraenzl

Interior of Flower

Plant and Flowers in situ Thailand

Photos by Kurt Keller


Drawing by Seidenfaden


Drawing by Wu Zanghua and Flora of China Website

Part shadeHot Cool LATERSummer

Common Name The Thailand Habenaria

Flower Size .6" [1.5 cm]

Found in southeastern Guizhou province of China and northern Thailand in grassy locals 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, 2 to 10 flowered inflorescence with 3 to 4, suberect, lanceolate, acuminate, sometimes with shortly hairy margined sterile bracts and lanceolate to ovate, acuminate margined, shortly hairy, shorter than the ovary floral bracts.

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 mainain their separate species status.


References W3 Tropicos, Kew Monocot list , IPNI ; 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;