Cynanchum. | ASCLEPIADE& (Brown). 755 
Imperfectly known species. 
13. C. hastatum (Pers. Syn. Pl. i. 273) ; leaves subhastate-lanceo- 
late, with rounded auricles; flowers fasciculate, subsessile. C. 
lanceolatum, Poir. Encycl. Suppl. ii. 430 ; Schultes, Syst. Veg. vi. 111. 
AFRICA, 
This may not be a South African plant. It is impossible to determine it from 
the description. 
XXIII. SARCOSTEMMA, R. Br. 
Calyx 5-partite. Corolla 5-lobed nearly to the base, rotate or 
rotate-campanulate; lobes overlapping in bud. Corona double, 
arising from the filament part of the staminal column; outer 
corona annular or cup-shaped, pentagonal, truncate or shortly 
lobed ; inner corona of 5 erect fleshy compressed or keeled lobes, 
embraced at the base by the outer corona. Staminal column arising 
from the base of the corolla; anthers with terminal membranous 
appendages inflexed upon the apex of the style or ascending and 
surrounding it. Pollen-masses pendulous, solitary in each anther- 
cell, attached in pairs by short slender caudicles to the pollen- 
carriers. Style-apex convex, shortly conical or shortly produced and 
often slightly bifid. 
Leafless fleshy shrubs ; stems branching, terete, trailing or twining ; flowers in 
sessile umbels, terminal or lateral at the nodes. 
Disrris. Species few, in the dry parts of the tropical and subtropical regions 
of the Old World. 
1. 8. viminale (R. Br. in Mem. Wern. Soc. i. 51); stems trailing 
or twining, or perhaps forming a bush, succulent, glabrous, becoming 
woody, and sometimes with a very thick corrugated corky bark 
when old ; flowering branches 1-3 lin. thick, leafless or with minute 
ovate rudimentary leaves }—1 lin. long ; umbels lateral and terminal, 
sessile, many-flowered ; pedicels 24-5 lin. long, minutely puberulous 
or subglabrous ; sepals $—3 lin. long, ovate to suborbicular, acute or 
obtuse ; corolla-lobes very spreading, 2-3 lin. long, 1-1} lin. broad, 
ovate-oblong, obtuse or acute, with reflexed margins, greenish-white 
or sulphur-coloured, glabrous on both sides ; outer corona arising at 
or near the base of the staminal column, annular, pentagonal, }—} lin. 
deep, truncate, enclosing the bases of the inner corona-lobes, which 
are }-1 lin. long, adnate to the column at the lower part, free above, 
ovate, acute, compressed-keeled at the base, rounded from apex to 
base on the back, with the slightly incurved tips applied to the 
backs of the anthers, white; staminal column 1}-1} lin. long; 
anther-appendages ovate, acute, adpressed to the sides of the conical 
style-apex, which is sometimes produced much —— oo in a 
c 
