ORCHIDE^E. 93 



Anthera ovata 3mm. longa apice acuminata. 



HAB. Urai, leg. S. SASAKI, Aprili. 1910. 



Remarkable for the rostellum which is much longer than that of any 

 other species of the genus in the island. 



Gastrodia R. BE. 



Gastrodia dioscoreirhiza HAYATA sp. nov. Terrestris aphylla. Tuber 

 longissimum cylindricum vermiforme recurvnm haud radiciferum 20-30 cm. 

 longum 10-20 cm. in diametro rugosissimum squamis tenuissimis hyalinis sparse 

 obtectuni apice ad scapum abeuns. Scapi complanati fulvo-rubescentes hac atque 

 ilkc vaginis brevibus instruct!. Rhachis florifera 3^4 cm. longa glabra, bracteis 

 oblongis 3 mm. longis 2 mm. latis apice obtusis valde concavis glabris, pedicellis 

 erectis glabris ovario exccpto 4 mm. longis, ovariis obcoiiico-cylindricis apice 

 hand contractis 2 mm. latis 2 mm. longis basi attenuatis. Sepala cum petalis 

 conuata tubum formantia fulvo-rubesceiitia, tubo circ. 1 cm. longo 4 mm. lato 

 5-lobato, lobis exterioribus (sepalis) 1-2 mm. longis scmi-clausis valde concavis 

 intus Isevibus extus tuberculatis, lobis interioribus (petalis) rotundatis l-2 mm. 



longis Isevibus l mm. latis basi contractis. Labellum Columna 



elongata triquetra ad angulos manifesto alata. 



HAB. Girancho : Soseikyaku, leg. B. HAYATA, 12, Mai. 1916. 



Very remarkable for its long cylindrical tubers. 

 Platanthera RICH. 



Platanthera stenoglossa HAYATA Ic. PI. Formos. IV. p. 123. 



HAB. Rankanzan, leg. B. HAYATA ad 4000 ped. alt., Mai. 1916. 



Note : Rhachis and sepals pale green ; petals and lips pale yellow. 

 Gytnnadenia R. BR. 



Gymnadenia Tominagai HAYATA sp. nov. Terrestris. Caulis simp- 

 lex 8-10 cm. longus erectus subreotus gracillimus supra basin 2 foliatus apice 

 1-2-floratus. Folia alterna oblanceolata 4 cm. longa 3 mm. lata apice acuta 

 basi gradatim attenuata erecta membranacea integra. Flores 1-2 terminales 

 vel laterales, bracteis lanceolatis 1 cm. longis 3 mm. latis apice acuminatis 

 glabris. Ovarium sessile ovoideo-cylindricum 7 mm. longum glabrum. Sepala 

 insequalia ; posticum erectum intus concavum oblongum 6 mm. longum apice 

 obtusum basi plus minus contractum glabrum 3 nervium, lateralia quam 



