Eulophia siamensis Rolfe ex Downie 1925 Photo courtesy of David Kuehn.
Common Name The Siamese Eulophia - In China Xian Ye Mei Guan Lan
Flower Size 1.2" [3 cm]
Found in Thailand and south Guizhou province of China in damp forests at elevations around 300 to 830 meters as a small sized, hot to warm growing epiphyte with an ovoid tuber giving rise to an elongate, cylindric stem carrying 2 to 3, narrowly linear, acute, conduplicate leaves that blooms in the late spring on an erect, basal, to 16" [to 40 cm] long, laxly several flowered inflorescence.
CAUTION I cannot verify this determination so please use with caution.
References W3 Tropicos, Kew Monocot list , IPNI ; The Orchids of Thailand Seidenfaden & Smitinand 1959 drawing good; Flora of China Vol 25 Zhengyi, Raven & Deyuan 2009; Flora of China Vol 25 Illustrations Zhengyi, Raven & Deyuan 2010 drawing hmm; The Wild Orchids in Yunnan Xu Xiang Ye & Liu 2010 photos ok