159. ORCHIDACE.E. [25. Cleisostoma. 



1. D. Wightii, Benth. 



Pendulous from branches with very short stout stems 1" or less 

 long. Leaves about 3, oblong slightly wider upwards subundulate 

 at margins, obtuse, minutely obliquely notched, 6-8" by 1-3-2". 

 Flowers inconspicuous pale ochreous yellow with purple markings on 

 the lip and pink-mottled at base of tepals, on a pendulous lateral 

 raceme shorter than the leaves. 



Chota Nagpur (without precise locality), Praia in Bengal Plants, but I can fiml 

 no specimens, not is it in Wood's list. Fl. July. 



Median sepal oblong, lateral shorter and broader, falcate, obliquely truncate. 

 Petals oblong blunt. Hypochile forming a conical sac with 2 erect very broad 

 ridged fleshy truncate lobes, epichile obovate with a forked appendage. 



24. SARCANTHUS, Lindl. 

 Characters of Saccolabium, but spur with a dorsal usually 2-lobed 

 callus or an erect plate within, inserted under the column, and with 

 the cavity more or less divided by a vertical septum. 



1. S. insectifer, Reichh. /. 



A small epiphyte Avith elongate creeping stem and 2-farious sub- 

 imbricate amplexicaul oblong leaves • 5-1 • 5" long, coriaceous, keeled, 

 obtusely 2-lobed with sometimes a mucro in the sinus. FloAvers small 

 greenish in lateral short-peduncled few-fid. corymbs, -6" only from 

 tip of lip to tip of posterior median sepal. Lateral sepals broadly 

 oblong slightly falcate green with brown streak each side, • 2", median 

 rather naiTower. 



Frequent in Chota Nagpur. Singbhum ! Hazaribagh, J.D.H. ! Chota Nagpur 

 (Ranchi ?), Wood ! Fl. June-July. 



Pteals similar to the sepals but oblong-oblanceolate. Lip -4" fleshy, base pale 

 saccate, scarcely spurred, with 2 very short erect, rounded side-lobes and a large 

 cordate pink fleshv midlobe contracted at its base. The " sac " is longitudinally 

 septate and papillose in the throat, which is closed (as in Cleisostoma) by a curved 

 ligulate process from the base of the column which can be pushed aside by an insect. 

 Column very short 2-horned, pollinia round waxy, very strongly attached by an 

 elastic caudicle to a broad membranous gland which is viscous in front. 



25. CLEISOSTOMA, Blume. 



Characters of Saccolabium, from which it differs in having a dorsal 

 scale or callus within the spur beneath the column and differs from 

 Sarcanthus only in the spur not being septate. 



Sir J. J). Hooker remarks that but for the multipKcation of names it would be 

 better to unite Cleisostoma and Sarcanthus with Saccolabium. 



1. C. micranthum, King ,f Pantl. Syn. Saccolabium micranthum, 

 Lindl. 

 A small epiphyte with stout compressed stems 3-8" long covered 

 Avith leaf-sheaths. Leaves narrowly oblong keeled obliquely truncate 

 and slightly 2-lid, 2 -5-3 -5" by -5— 6". Flowers very small, many in 

 the lateral racemes, -2" diam., white with large pink spots, entirely 

 pink or purple on the lip. 



Sarguja, Curdon ! Fl. July- Aug. 



Leaf-base shortly sheathing. Racemes longer than the leaves with stout 

 rhachis. Sep. broadly ovate, obtuse, spreading. Pet. smaller, oblong. Lip 

 fleshy as long as Sep., base with a wide blunt spur- adpressed to the ovary, with a 



1179 



