402 LXXXV. ASCLEPIADEE (BROWN). [Cynanchum. 
21. ©. microstegium, X. Schum. in Ann. Istit. Bot. Roma, vii. 39. 
A divaricately much branched shrub, sometimes climbing ; branches 
slender, soon becoming woody, glabrous. Leaves shortly petiolate, sub- 
coriaceous, glabrous; petiole 14-2 lin. long; blade 7-94 lin. long, 
1--2} lin. broad, ovate-lanceolate, acute or obtuse, cuneate or somewhat 
rounded at the base, slightly marginate. Umbels pedunculate, 4-5- 
flowered ; peduncle 4—5 lin. long, minutely pubescent ; pedicels 1}—2 lin. 
long. minutely pubescent. Sepals } lin. long, triangular, glabrous. 
Corolla 1 lin. long, carmine. Coronal-lobes not more than 4 lin. long, 
ligulate, acute. Follicles 2 in. long, nearly 2 lin. thick, narrow, 
acuminate. 
Wile Land. Somaliland, Riva. 
I have not seen this plant, but from the description suspect it will prove to be a 
species of Secamone. 
31. SOLENOSTEMMA, Hayne; Benth. et Hook. f. Gen. 
Phu, 749: 
Calyx 5-partite. Corolla deeply 5-lobed ; lobes stellately spreading, 
narrow, overlapping to the left in bud, scarcely twisted. Corona 
arising from the angle between the corolla and the base of the staminal- 
column, cup-shaped, 5-lobed; lobes induplicate-cucullate, opposite the 
corolla-lobes. Staminal-column arising near the bottom of the corolla, 
nearly as long as the corolla-lobes, clavate, the filament portion slender 
and longer than the corona; anthers oblong, tipped with a membranous 
appendage, which is inflexed over the style-apex. Pollen-masses 
pendulous, attached in pairs to the pollen-carriers by flexuous caudicles. 
Style not produced beyond the anther-tips, slightly convex at the apex. 
Foilicles stout, ovoid-lanceolate, beaked, smooth. Seeds turgid, crowned 
with a tuft of hairs.—An erect plant, with woody stems, opposite 
leaves, and sublateral cymes of moderate sized flowers. 
Species 1, extending through Egypt into Arabia. It is very closely allied to 
Cynanchum, and should, perhaps, be united with that genus; the chief difference 
being that the lobes of the corona are placed opposite to the corolla-lobes, and the 
filameut part of the staminal-column is long, slender and exsertdd from the corena. 
1. S. Argel, Hayne, Arzneyk. Gewiichse, ix. t. 38. Stems her- 
baceous, erect, 13-2 ft. high, branching, very minutely downy, leafy. 
Leaves longer than the internodes, ascending; petiole 1-2 lin. long; 
blade 1-14 in. long, }~3 in. broad, thick and rigidly coriaceous when 
dry, probably fleshy when alive, varying from lanceolate to oblong- 
ovate, acute or subacute, cuneate at the base, minutely downy on both 
sides; midrib flat above, prominent beneath ; veins indistinct. Cymes 
axillary, 14-2 in. long (including the 4-1 in. long peduncles), 1}-? 1n- 
in diam., densely many-flowered, minutely downy ; bracts 2-3 lin. long, 
4-3 lin. broad, linear-lanceolate, acute ; pedicels 2-3 lin. long. Sepals 
2 lin. long, } lin. broad, oblong, acute, minutely downy. Corolla-tube 
1 lin. long; lobes 2}~-3 lin, long, 3 lin. broad, narrowly oblong, obtuse, 
