774 ASCLEPIADE (Brown). [ Spheerocodon. 
326, and in Engl. and Pranil, Pflanzenfam. iv. ii. 283, fig. 85, J-L, 
and 285. S. natalense, Benth in Hook. Ic. Pl. xii. 79. S. natalensis, 
K. Schum. in Engl. and Prantl, Pflanzenfam. iv. ii. 285. S. caffrum, 
Schlechter in Journ. Bot. 1895, 339.  Tylophora caffra, Meisn. in 
Hook. London Journ. Bot. ii. 1843, 542 (by error 442); Decne m 
DC. Prodr. viii. 612. Vincetoxicum caffrum, Kuntze, Rev. Gen. Pits 
424, Gongronema Welwitschii, K. Schum. in Engl. Jahrb. xvii. 145. 
Katanart Recron: Transvaal; near Barberton, Thorncroft ! near Rustenburg, 
4000-4500 ft., Miss Pegler, 1069! Miss Nation, 277 ! : 
Eastern Recion: Natal; near Durban, Krauss, 85 ! and without precise locality, 
Gerrard, 1797! Swaziland; between Mbabane (Embabaan) and Bremersdorp, 
2500 ft., Bolus, 12144! 
Also in Tropical Africa, 
XXX. MARSDENIA, R. Br. 
Calyx 5-partite.  Corolla-tube campanulate; lobes 5, erect, 
spreading or rotate, overlapping and straight, or slightly twisted in 
bud. Corona of 5 fleshy lobes arising from and adnate to the 
staminal column, with free tips and often with free margins, sometimes 
with tubercle-like projections at the base, which are sometimes con- 
fluent, producing more or less the appearance of an outer corona ; 
tips erect or somewhat connivent, applied to the backs of the anthers. 
Staminal column arising from or near the base of the corolla ; 
anthers erect, with the cells applied to the sides of the conical apex 
or more or less concealed under the margin of the dilated part of 
the style, terminated by membranous appendages, which are free or 
connate and more or less incumbent on the top of the style-apex or 
applied to the sides of its conical tip or beak. Pollen-masses erect, 
solitary in each anther-cell, attached in pairs to the pollen-carriers 
by short or elongated, moderately stout caudicles. Style depressed, 
convex, conical or produced into a long beak at the apex. 
Follicles with a thick or coriaceous pericarp, smooth, often winged. 
Seeds crowned with a tuft of hairs. 
Climbing or erect perennials ; leaves opposite ; flowers small or of moderate 
size, arranged in umbel-like cymes or in small sessile umbels or clusters scattered 
nae the branches of the cymes or panicles, which are lateral at the nodes or 
ary. 
Distris. A large genus, widely distributed throughout the tropical and sub- 
_ tropical regions, only one species in South Africa. 
1. M. floribunda (N. E. Br. in Dyer, Fl. Trop. Afr. iv. i. 422 ina 
note); stem climbing, woody, branched, rusty-puberulous at the 
young tips ; leaves herbaceous ; petiole 4—} in. long ; blade 3-24 in. 
long, 4-14 in. broad, ovate or ovate-lanceolate, obtuse, acute or 
acuminate, glabrous on both sides; cymes umbel-like, densely 
many-flowered, 4-1 in. in diam., lateral at the nodes ; peduncles 
