Platanthera angustata (Blume) Lindl. 1835
Photo by Peter O'Byrne, André Schuiteman, Dr. E.F. de Vogel and Jaap Vermeulenand Their Netherlands National Herbarium Website
Plant in situ in Cameron Heights Malaysia
Photo by David Kuehn
To 
Common Name or Meaning The Thin Plantanthera
Flower Size 1/2" [1.25 cm]
Found in Japan, Thailand, Malaysia, Vietnam,Java, Sumatra, Lesser Sunda Islands, Borneo, Sulawesi, New Guinea, Moluccas and the Philippines in moss under trees on exposed upper mountain ridges at elevations of 1500 to 2800 meters as a medium to large sized, warm to cold growing terrestrial orchid with roots that are thick and fleshy giving rise to an erect stem carrying light green, veins darker, ovate, acute, smaller when higher up leaves with the lowest being petiolate and the others being sessile that blooms in the fall and witner on an erect, terminal, 12" to 24" [30 to 60 cm] long, few to several flowered inflorescence with ovate, acuminate floral bracts and holding the flowers facing the ground.
Synonyms Habenaria amesiana (Schltr.) Ames 1915; Habenaria angustata Kuntze 1891; Habenaria elmeri Ames 1912; Habenaria halconensis Ames 1907; Habenaria zosterostyloides Hook.f. 1890; *Mecosa angustata Blume 1825; Platanthera amesiana Schltr. 1911; Platanthera elmeri (Ames) Schltr. 1919; Platanthera hachijoensis Honda 1935; Platanthera halconensis (Ames) Schltr. 1911; Platanthera mandarinorum f. hachijoensis (Honda) M.Hiroe 1971
References W3 Tropicos, Kew Monocot list , IPNI ; Bonplandia Rchb.f 1857; Die Orchideen Von Java J.J.Smith 1905; Materials for a Flora of the Malayan Penninsula Ridley 1907 as Habenaria zosterostyloides; Studies in the Family Orchidaceae Fascile 2 Ames 1908as Habenaria angustata; Die Orchideen Von Java Figuren Atlas J.J.Smith 1908 drawing fide; Studies in the Family Orchidaceae Vol II Ames 1908 as Habenaria angustata; Studies in the Family Orchidaceae Vol 5 Ames 1915 as H amesiana; Studies in the Family Orchidaceae Vol V Ames 1915 as H elmeri; Studies in the Family Orchidaceae Vol V Ames 1915 as H halconensis; Studies in the Family Orchidaceae Vol V Ames 1915; Flora Of Malaya Vol 1 Holttum 1957 as Habenaria angustata; Orchids of Southern Ryukyu Islands Garay & Sweet 1974 drawing fide; Dansk Botanisk Arkiv Bind 31 #3 Orchid Genera in Thailand V Orchidoideae Seidenfaden 1977 drawing fide; The Complete Writings on Philippine Orchids Vol 1 Quisumbing 1981 as Habenaria angustata; Orchidiana Philipiniana Vol 1 Valmayor 1984; Orchidiana Philipiniana Vol 1 Valmayor 1984 as P elmeri; Orchidiana Philipiniana Vol 1 Valmayor 1984 as P halconensis; Orchids of Java Comber 1990; The Orchids of Penninsular Mayasia and Singapore Seidenfaden & Wood 1992 drawing fide; Orchids of Malaya Segerback 1992 as H angustata photo fide; The Plants of Mount Kinabalu Vol 2 Orchids Beaman, Wood, Beaman & Beaman 1993; A Checklist of the Orchids of Borneo Wood & Cribb 1994; Identification of the Orchids [Orchidaceae Juss.] Vietnam Averyanov 1994; Lindleyana Vol 15 No 4 2000; Orchids of Sumatra Comber 2001; Lindleyana Vol 17 No 1 2002; Flora Malesiana Orchids of the Philippines Vol I Agoo, Shuiteman and de Vogel 2003; Flora Malesiana: Orchids of New Guinea Vol 5 Schuiteman & D de Vogel 2008; The Orchids of Mount Kinabalu Vol 2 Wood, Beaman, Lamb, Chu Lun and Beaman 2011; Wild Orchids of Penninsular Malaysia Ong, O'Byrne, Yong & Saw 2011 photo fide; Flora Of Thailand Orchidaceae Vol 12 Part 1 Pedersen, Kurzweil, Suddee & Cribb 2011 drawing fide; A to Z of South East Asian Orchid Species Vol 2 O'Byrne 2011 photo fide
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