190 Orchidece. [Luisia. 



spreading branches of a shortly stoutly peduncled panicle 

 12-18 in. long, 4 in. long from the tip of the dorsal sepal to 

 that of the spur, bracts very small, triangular, acute, persistent, 

 pedicel with ov. ^-5 in., decurv^ed; sep. and pet. all broad, 

 reticulately many-veined, dorsal sep. oval, lateral larger, 

 broadly ovate, adnate by a very broad base to the long foot 

 of the column; pet. larger than the dorsal sep., obovate; lip 

 sessile on the foot of the column, 3-lobed, side lobes small, 

 rounded, bordering the mouth of the large subclavate sac or 

 spur, mid lobe broadly ovate, acute, flat, many-veined, base 

 with a fleshy rounded callus at the mouth of the sac; column 

 very stout, foot with a long, broad, deep channel leading into 

 the sac of the lip, and raised fleshy sides, rostellum shortly 

 beaked; anth. depressed, imperfectly 2-celled, pollinia globose, 

 sulcate, strap short, broad, gland large, cleft; fr. i-i in., 

 pyriform, ribs thick, pedicel stout, decurved. 



Low country, below 2000 ft.; rather rare. Dumbara; Nelande ; near 

 Bibile ; Seven Korales Dist. Fl. Sept., Oct.; white, with a blush of pale 

 pink. 



Also in S. India. 



29. ZiUISIA, Gaud. 



Epiphytes; stem rigid, terete, simple or branching, not 



pseudobulbous ; roots vermiform; 1. elongate, terete, obtuse; 



fl. spicate on a short axillary ped., rather small, drooping; 



bracts short, thick, persistent ; sep. spreading or incurved ; pet. 



narrower, but as long or longer; lip inserted on the base of 



the column, entire or obscurely 3-lobed; column very short, 



truncate, foot o; anth. 2-celled, pollinia 2, globose or pyriform, 



waxy, strap short, flat, its margins replicate, gland broad ; fr. 



narrow, erect.— Sp. about 15; 14 in Fl. B. Ind. 



Lip with a broadly obcordate short terminal lobe . i. L. teretifolia. 

 Lip panduriform, tip with two divergent lobules . 2. L. tenuifoli.\. 



I. 1*. teretifolia, Gaud. Bot. Freyc. Voy. 427 (1S26). 



Cymbidiuin iriste, Lindl. Gen. and Sp. Orch. 167 (non Willd.). L. zey- 

 lanica, Lindl. Fol. Orch. Luisia, 3 ; Thw. I^num. 302. C. P. 2347 (part). 



Fl. B. Ind. vi. 22. Wight, Ic. t. 1689 {Cymbidiuin tenuifolium). Bot. 

 Mag. t. 3648 (Cymb. triste). Ann. Bot. Gard. Calcutt. viii. t. 271. 



Stem 6-12 in., about as thick as a swan's quill, with stout 

 branching vermiform roots; internodes \-\ in.; 1. 4-7 ^\'\.^ as 

 thick as a crow's quill; green, purple-spotted, tip rounded; 

 ped. with rhachis of few-fld. spike 1-2 in., ov. very short; 

 bracts minute; sep. \ in., dorsal oblong or linear-oblong, 

 lateral broader, spreading, subacute, with a dorsal winged 

 keel; pet. as long as the sep., linear-oblong, obtuse; lip rather 



