400 Lxxxv. ASCLEPiADE^ (brown). \C ynauchum. 



staminal-column by 5 short septa. Anther-appendages broad and 

 rounded, inflexed over the margin of the truncate style-apex. Follicles 

 solitary (always?) 2 in. long, 3-3J lin. thick, terete, acuminate, smooth, 

 glabrous. Seeds flattened, \ in. long, ovate, softly pubescent on both 

 sides. — C. sarcostemmoides, K. Schum. in Engl. & Prantl, Pflanzenfam. 

 iv. ii. 252. Sarcostemma aphyllum, R. Br. in Mem. Wern. Soc. i. 50, 

 partly ; Decne. in DC. Prod. viii. 538 ; K. Schum. in Engl, k Prantl, 

 Pdanzenfam. iv. ii. 25G. Asclepias a2^hylla, Thnnb. Fl. Cap. ed Schult. 

 234 partly, as confirmed by one of the three specimens in his herbarium. 

 ISarcostemma tetrapterum, Turcz., and Monostemma tetrajyterum, Turcz., 

 (k M. aphyllum, Turcz. in Bull. Soc. Mosc. 1848, i. 255. Sarcocyphula 

 Gerrardi, Harv. Thes. Cap. ii. 58, t. 101. 



IMCozamb. I>ist. Zanzibiir, KirTc / Namiqua Island, Kid ton I German 

 East Africa : Usambara, Amboni, Hoist, 2706 ! Pare Mountains, Volkens, 2375. 

 Purtujruese East Africa : by tlie River Zambesi, opposite Sena, Kirk, 102 ! 



Also in South Africa. 



Vineetoxicinn sarcostemmoides, Schweinf. ex Penzig in Atti del Congr. Bot. 

 Interna/. 1892, .349, from hills to the south of Geleb, in Eritrea, may belong here, 

 but there is no description. 



Imperfectly known species. 



K). C. defoliascens, K. Schum in Ann. Istit. Bot. Roma, vii. 

 38. A shrub; stem 2-|-4J lin. thick; branches slender, flexuose, 

 glabrous, becoming leafless. Leaves |-2 in. long, scarcely exceed- 

 ing 1 lin. in breadth, linear, acute, narrowed at the base into a 

 very short petiole, recurved along the margins, somewhat fleshy,, 

 glabrous. Umbels pedunculate, few-flowered ; peduncle about 4^- lin. 

 long, filiform, glabrous; pedicels 1-2|^ lin. long, slender, glabrous. 

 Sepals 1 lin. long, subulate, glabrous. Corolla about 2 lin. in diam., 

 rotate, glabrous, whitish -green. Coronal-lobes about J lin. long, free 

 nearly to the base, spathulate, a little shorter than the staminal- 

 column, which is J lin. long. 



irile Ziand. Somaliland : on a dry plain, near Mandah, Robecchi-Bricchelt i 

 110. 



Fi-om tbe de?crii)tion I very much doubt if this plant, which I have not seen, 

 belongs to the genus Cynanchum. 



17. C. Dewevrei, De Wild, cb Durand, Conirib. Fl. Congo, i. ii. 42. 

 Stem twining, terete, tomentose. Leaves petiolate ; petiole J-l-o in. long, 

 slender, pilose; blade 1-3J in. long, ^-Ij in. broad, oblong-lanceolate, 

 acute, cordate at the base, subentire, thinly pubescent above, toinentose 

 beneath. Inflorescence from one axil (sublateral ?), umbellate or race- 

 mose, many-flowered ; peduncles shorter or slightly longer than the 

 petioles, velvety ; pedicels 1 J-2J lin. long, slender, velvety ; bracts 

 minute, shorter than the pedicels, linear, pilose. Sepals about h lin. 

 long, triangular-subulate, pilose. Corolla rotate, about 1 lin. long, 

 divided almost to the base into 5 oblong lanceolate lobes, glabrous on 



