ORCHIDACEiE 



patentibus. Pedicellus cum ovario 8 mm. longus, pergracilis. 

 Sepala lateralia circa 7 mm. longa, 2 mm. lata, oblongo-triangu- 

 laria, sensim acuta, trinervia, in sicco pellucida. Sepalum dorsale 

 simile, 6 mm. longum, basi concaviusculum. Petala 3.5 mm. 

 longa, 1 mm. lata, oblonga, uninervia, margine praecipue prope 

 apicem ciliata. Labellum mobile, 4 mm. longum, in circuitu 

 elliptico-lanceolatum, vix 2 mm. latum trans medium, apice sub- 

 acuto, basi valde cubico-incrassata, truncata, in basi bilobulatum, 

 lobis circa 1 mm. latis, obtusis, leviter recurvis, elevatis, post 

 lobos callo papilliformi ; unguis brevis, angustatus. Columna 

 vix 1.5 mm. alta, in pedem 1.5 mm. longum producta, utrinque 

 ad apicem in stelidium sigmoideum, antheram superans, vix 

 1 mm. longum producta. Anthera apice incrassata. 



The labellum is thickened at the base so as to form a cube in 

 front of the membranaceous elliptic-lanceolate lamina. At the 

 summit of this cubically thickened base there is a crescent- 

 shaped appendage — its rounded tip curved backward — that 

 gives a two-lobed appearance to the basal part of the labellum. 

 In addition to the crescent-shaped appendage there is a small 

 papilliform or umbonulate protuberance, posteriorly situated, 

 which points toward the column. 



Near allies of B. cuhicum are B. graciliscapum Ames & Rolfe 



which has broader leaves and a very different labellum ; B. sap- 



phirinum Ames which has shorter scapes, more falcate lateral 



sepals and a very different labellum and B. angulatum J. J. Sm. 



which has ovate not oblong petals, shorter scapes and a very 



different labellum. 



Philippines, Mindanao, Bukidnon Subprovince, Mahilucot River, M. 

 Ramos &(■ G. Edano Bur. Sci. 38633, June- July 1920. On tree in forest. 

 "Flowers blue and brown."" 4200 feet altitude. 



[84] 



