Peristylus constrictus (Lindl.) Lindl. 1835

Plant and Flowers insitu Chang Mai Thailand Photos by © David Kuehn in situ Chang Mai Thailand

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Common Name The Constricted Peristylus - In China Da Hua Kuo Rui Lan - In Thailand Nang tai tua phu, Wan khao phae, Ueang nang tai

Flower Size .6" [1.5 cm]

Found in the western Himalayas, Chinese Himalayas, Assam, Bangladesh, eastern Himalayas, India, Nepal, Myanamar, Thailand, Cambodia, Vietnam and the Philippines on shrubby slopes at elevations of 450 to 1200 [1500 to 2800 China] meters as a medium to large sized, sized, hot to warm [cool to cold - China] growing terrestrial with a cylindrical, pubescent tuber giving rise to an erect, stem bracteate above and carrying on the lower half ovate-elliptic to ovate-lanceolate, acute, shortly petiolate and channeled, reticulate leaves that blooms in the late spring and early summer on a terminal, cylindric, glabrous, 3.6 to 14" [9 to 35 cm] long, subdensely many flowered inflorescence with erect, lanceolate, acuminate floral bracts and carrying sweetly scented flowers.

THe brown petals are fairly diagnostic for this species.

Synonyms Habenaria constricta (Lindl.) Hook.f. 1890; Habenaria cylindrocalyx Gagnep. 1931; *Herminium constrictum Lindl 1832; Orchis leucantha Ham. ex Hook.f. 1890; Platanthera constricta Lindl. ex Wall. 1832

References W3 Tropicos, Kew Monocot list , IPNI ; Otia Botanica Hamburgensia Rchb.f 1878; The Orchids of Sikkim-Himalaya Part 1 King & Pantling 1898 as Habenaria constricta drawing fide; The Orchids of North-Western Himalaya Vol IX Part II Duthie 1906 as Habenaria constricta; The Orchids of Thailand Seidenfaden & Smitinand 1959 as P goodyerioides drawing fide; Orchids of Java Comber 1990 photo fide; Orchids of Kumaun Himalayas Pangtey, Samant and Rawat 1991; The Orchids of Penninsular Malaysia and Singapore Siedenfaden & Smitinand 1992 drawing photo fide; The Wild Orchids Of Thailand Vaddhanaphuti 2001 photo; Orchids of Bhutan Pearce & Cribb 2001; Orchid Flora of Kamrup District, Assam Iswar Chandra Barua 2001 drawing fide; Orchids of India A Glimpse Misra 2007; Native Orchids From Gaoligongshan Mountains, China Xiaohua, Xiaodong and Xiaochun 2009; 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 hmm; Flora Of Thailand Orchidaceae Vol 12 Part 1 Pedersen, Kurzweil, Suddee & Cribb 2011 drawing/photo fide

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