— 17 — 



siiperne c. 0.2 cm. iatiim. Oynostcmium totum c. 0.8 cm., usque ad 

 npiccin staininodii c. 0.7 cm. longiim, supra basin decumbentcMii r^- 

 ciirvum et ovariuin subcontiniium, leviter decliiiatum. recurviiliim, parte 

 intégra supra basin ovario teuuiorem dorso valde iucrassata laieraliter 

 compressa dorso obtusangula et praesertim iiiferiie canaliculata, usque 

 ad basin filamentorum c 0.26 cm. longa; stamina 2, stylo arcte adpressa; 

 filamenta erecta, brevia, subulata, in sulcum dorsalem antherae qua- 

 drantia, c. 0.13 cm. longa. Antherae arcte contiguae, introrsae, dorsifixae, 

 lanceolatae, apice oblique obtusae, basi valde obliquac, brevissime obtuse 

 bilobdlae, dorso obtusangule convexae et basi longitudinaliter sulcatae, 

 longitudinaliter déhiscentes, staminodium paulum superantcs, stylo paulo 

 breviores, c. 0.55 cm. longae, 0.13 cm. latae, in c. 0.17 cm. supra basin 

 thecae longioris insertae. Staminodium stylo adnatum, apice tantum liberum 

 et adpressum, lineare. obtiisum, dorso convexum, stylo bene brevius. Stylus 

 exsertus, cum staminodio lateraliter compressus, parte libéra leviter a latere 

 compressa, utroque latere longitudinaliter sulcata; stigma lateraliter com- 

 presso-triangula, oblique truncata, papillosa. Ovarium rectum, obtuse tri- 

 gonum, basi subcontractum, c, 2.1 cm. longum. 



Sumatra: Ophir districts, on the western slope of Goenoeng Talamau 

 (Ophir), 600 m. (H. A. B. Bunnemeijer n. 378, April 1917). 



An ally of A. Wallichii R. Br. and differing from the Javanese and 

 Sumatra représentants of that species by the broader leaves, laxer inflores- 

 cence, larger flowers. The basai part of the column is much enlarged and 

 laterally compressed, with a groove on the back, somewhat in the way of 

 A. odurata Bl. 



Description from a single dried spécimen and flowers preserved in alcohol. 



The flowers are yellow. 



' C o r y s a n t h e s s u m a t r a n a J. J. S. n. sp. 



Tuber subovalis, pilosus, c. 0.65 cm. longus. Caulis hypogaeus tennis, 

 pilosus, c. 2.6 longus, nonnuUis vaginis squamiformibus donatus, stolones 

 pilosos emittens. Caulis epigaeus folii marginibus decurrentibus antice 

 2costatus, glaber, c. 1.3 cm. longus, vagina tubulosa acuta c. 0.6 cm. longa 

 ad basin. Folium sessile, ovarium amplectens, ovato-cordatum, breviter 

 acute acuminatum, mucronatum, lobis basilaribus rotundatis, costa média 

 dorso prominente, nervis 2 curvatis apicem fere attingentibus et 1 brevi 

 utrinque, laxe reticulato-venosum, c. 1,8 cm., cum lobis basilaribus 2 cm. 

 longum, 1.45 cm. latum. Bractea erecta, sepalo dorsali adpressa, subulata, 

 concava, Inervia, dorso subcarinata, c. 1 cm. longa, 0.22 cm. lata. Flos ses- 

 silis, erectus, cil cm. longus. Sepalum dorsale erectum, labello adpressum, 

 concavum, apice incurvum et valde cucuUato-concavum, spathulatum, ex 

 ungue cuneato-oblongo sensim in laminam suborbicularem dilatatum, obtu- 

 sissimum, 3nervium, nervis exterioribus ramosis, omnibus dorso prominen- 

 tibus et subverruculosis, costa média carinata, subexplanatum c. I cm. longum, 

 basi fere 0.2 cm., superne 0.54 cm. latum. Sepala lateralia adscendentia, 



