Platanthera boninensis Koidz. 1919
Photos by Takato NATSU from Japan and his Japan Orchids Page
Collection sheet by Koidz. and Kew's Plants of the World Page
Common Name The Bonin Platanthera / in Japan - Shima ture-sagi-sou
Flower Size .8" [2 cm]
Found only on Bonin in the Ogasawara Islands of Japan as a small to medium sized, cold growing terrestrial with a terete, robust stem enveloped basally by sheaths and carrying 5 to 10, the lower 2 to 3, erect-patent, oval to ovate, rarely elliptic, rounded to obtuse apically, amplexicaul and decurrent basally, membraneous, 9 to 16 ribbed leaves the upper leave, much smaller, adpressed to erect-patent, lanceolate, obtuse, attenuate semiamplexicaul leaves that blooms in the spring on an erect, terminal, rachis 2 to 4.8" [5 to 12 cm] long, many flowered inflorescence with erect-patent, foliaceous, lanceolate to ovate-lanceolate, obtuse, acumiante, as long as the ovary floral bracts and carrying greenish flowers
Synonyms
References W3 Tropicos, Kew Monocot list , IPNI ;
* Bot. Mag. (Tokyo) 33: 113 Koidz. 1919
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