Peristylus constrictus (Lindl.) Lindl. 1835

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

Fragrance Full shade Warm Cool LATESpring EARLYSummer

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, Myanmar, 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, warm to cool [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