Heterostemina^ AscUpiadece. 1 63 



base, shortly acuminate, acute, glabrous, very thick, paler 

 beneath, petiole short, stout ; fl. numerous, on rather long 

 glabrous ped., in umbels which continue to produce buds on 

 the central axis which becomes thickened and elongated, 

 peduncle stout, stiff, as long as 1. ; cal.-segm. very small, acute, 

 glabrous; cor. under \ in. diam., glabrous, lobes broad, sub- 

 acute; column very large and prominent, coronal processes 

 spreading, ovate, pointed, thick, horny, shortly spurred at 

 base ; follicles not seen. 



Forests of the moist low country; very rare. Kitulgala and other 

 places in Ambagamuwa District (Thwaites). Fl. March; greenish or 

 purplish-white. 



Also in S. India. 



I have not seen this living. 



19. HETEROSTEX^niA, W. ^ A. 



Perennial twiner, 1. thin, fl. rather large, in umbellate 

 axillary cymes ; cal. small, segm. 5 ; cor. rotate, cut about 

 half way down into 5 lobes, valvate ; column small, much 

 depressed, stam. 5, connate, anth. small, with a short rounded 

 tip, pollen-masses minute, i in each cell, erect, ovoid, com- 

 pressed, nearly sessile, coronal processes large, fleshy, rounded, 

 spreading horizontally, with a large erect appendage on upper 

 side ; follicles divaricate, linear, smooth ; seeds comose. — Sp. 

 10; ^\vl Fl. B. Ind. 



H. tanjorense, W. &= A. in Wight^ Contrib. 42 (1834). 



Thw. Enum. 198. C. P. 1856. 



Fl. B. Ind. iv. 47. Wight, Ic. t. 348. 



Perennial, stems long, twining, glabrous, slender, thickened 

 at the nodes; 1. 2^-4 in., oblong-ovate, rounded or subcordate 

 at base, very acute, glabrous, thin, 3- or 5-nerved at base with 

 a prominent gland there on upper surface, paler beneath with 

 prominent venation ; fl. on long glabrous ped., cymes sessile 

 or on very short peduncles; cal.-segm. lanceolate, subacute, 

 glabrous; cor.-lobes broad, acute; coronal processes very con- 

 spicuous ; follicles about 4 in. ; seeds \ in., oblong, narrowly 

 winged, coma i in. 



Moist region to 4000 ft.; rare. Hantane. Fl. June ; dark purplish or 

 greenish-brown. 



Also in S. India. 



The Fl. B. Ind. distinguishes our plant from the Indian, as van 

 zeylanicum, Hk. f., by its acute leaves. 



