— Cynanchum. | LXXXV. ASCLEPIADEZ (BROWN). 399 
lanceolate-oblong, obtuse or acute, slightly puberulous or glabrous. 
Corolla rotate, 4-44 lin. in diam.; lobes 1? lin. long, 1 lin. broad, 
oblong, subobtuse, saccate just below the apex, with strongly revolute 
margins and the whole lobe slightly twisted when fully expanded, 
glabrous. Corona divided to the base into 5 broad cuneate lobes 
1} lin. long, trifid to } of the way down; teeth equal, the lateral 
linear-subulate, divergent; middle tooth deltoid-ovate, acute; inner 
face of the lobe with two parallel keels down the middle and two 
oblique keels from the lateral teeth joining them at a little below the 
middle. Staminal-column 1} lin. long, the stipitate part } lin, long. 
Pollen-carriers very narrow, suberect.—Schizostephanus somaliensis, 
N. E. Br. in Kew Bulletin, 1895, 250; K.Schum, in Ann. Istit. Bot. 
Roma, vii. 38. 
Nile Land. Somaliland: Boobi, James & Thrupp ! 
14. C. przecox, Schlechter in Journ. Bot. 1902, 256. Plant very 
small, probably with a tuberous rootstock, 1-1} in. high, forming 
“little tufts close to the ground, no leaves at the time of flowering” 
(Rand). In the type the single stem is about } lin. thick, pubescent, 
bearing a few ovate acute pubescent scale-leaves 3-1 lin. long, }—? lin. 
broad, and is cymosely divided at the top into a dense cluster of sessile 
or pedunculate cymes, forming a head of flowers about ? in. in diam. ; 
pedicels 14-3 lin. long, puberulous with minute curved hairs, Sepals 
about 1 lin. long, $ lin. broad, lanceolate or ovate-lanceolate, acute, 
puberulous on the back. Corolla deeply lobed, campanulate, quite 
glabrous; tube } lin. long; lobes 14 lin. long, 3-3 lin. broad, oblong, 
obtuse, margins recurved. Corona 14 lin. long, 10-lobed to about half- 
way down, without lobes or appendages within, glabrous ; tube # lin. 
long ; longer lobes 3—? lin. long, linear-oblong, obtuse, margins incurved; 
shorter lobes 4-4 lin. long, ovate, obtuse, plicate. Staminal-column 
% lin. long; anther-appendages elliptic, subacute, ascending and 
adpressed to the sides of the shortly conical style-apex, which 
slightly exceeds them. 
Mozamb. Dist. Rhodesia: Salisbury ‘district, in the valley of the River 
Mazoe, Rand, 512! 
15. C. sarcostemmatoides, XK. Schum. in Engl. Pf. Ost-Afr. 
C. 323. Stem twining, succulent, leafless or with minute sessile ovate 
rudimentary leaves } lin. long, glabrous, very similar to that of 
Sarcostemma viminale but more slender, 3-14 lin. thick. Flowers few or 
several, umbellate on short sublateral tubercles, which elongate to } in. 
and become densely covered with the contiguous spirals of scars of 
fallen flowers ; pedicels 1-2 lin. long, glabrous. Sepals }-} lin. long, 
ovate, acute, glabrous. Corolla rotate, about 2} lin. in diam., 5-lobed 
nearly to the base; lobes 1 lin. long, oblong-ovate, acute, glabrous. 
Corona arising from the base of the staminal-column and as long as it, 
i lin. long, campanulate, 5-toothed; teeth shortly ovate or oblong, 
inflexed over the backs of the anthers, with decurrent keels from their 
margins within the tube; corona below the keels attached to the 
