690 BENGAL PLANTS. [Holostemma. 
1245. HotostemMa RHEEDEI Wall. ; F. B. I. iv. 21; E. D. H. 328. 
Asclepias annularis F. I. ii. 37. 
Chota Nagpur; N. Bengal, D 
An extensive climber. Kol. pan ; Santal. Aptng, 
mouron arak’ 
575. Cynanchum Linn. 
Erect or twining herbs or shrubs ; ; leaves opposite, rarely 
whorled. Flowers small, greenish or purplish, in axillar 
umbelliform, racemose, or ance te cymes. Sepals cena 
in a 5-partite calyx, usually 5-10-glandular at base within; lobes 
acute. Petals 5, connate in a rotate corolla; lobes overlapping to 
the right or occasionally valvate: corona membranous, adnate to 
base of staminal column, 5-partite or campanulate or cupular, 
s on 
the inner face opposite the lobes. Stamens 5, adnate to base of 
corolla-tube ; filaments connate in a short column; anthers sessile 
or stipitate, si membranous, inflexed ; pollen-masses solitary in 
each cell, not PRI pendulous, waxy. Carpels 2, distinct; 
tigma flat or umbonate or apiculate. Fruit of 2 terete or shortly 
elit, longa somewhat ventricose, usually smooth follicles. 
Seeds comose 
igie. Biewihodin CALLIALATA Ham.; BeBe loaves 
Chota Nagpur; C. Bengal; E. Bengal; Chittagong. 
A glabrous or sparingly hirsute, twining shrub. There is 
a very distinct form with-linear leaves (C. angustifoliwm 
Wight) which has been collected in N. Bengal, Duars. 
Beng. Chagul-bati; Hind. Kalia-lata. 
576. Raphistemma Wall. 
Twining, glabrous shrubs ; leaves opposite, membranous, deep- 
cordate, with wide sinus. Flowers large, white, long-pedicelled, in 
umbelliform, axillary, long-peduncled cymes. Sepals connate in a 
5-lobed corolla, nf rt td within. Petals 5, connate in 
panulate, 5-fid corolla; lobes spreading, overlapping to the right 
and twisted to re lett: corona of 5 membranous scales, adnate to 
the column, produced into long, — linear ligules. Stamens _ 
5, rae to corolla-tube ; filaments connate in a large column; 
embranous, mumaet tips ; pollen-masses in each 
cell ates pendulous, not compressed, waxy. Carpels 2, dis- 
