384 Lxxxv. ASCLEPiADEiE (brown). [^Savcostemma, 



embracod by the outer corona. Staminal-column arising from the 

 base of the corolla ; anthers with terminal membranous appendages- 

 inflexed over or suberecb and surrounding the apex of the style. 

 Pollen-masses pendulous, solitary in each cell of the anther, attached 

 in pairs by short slender caudicles to the pollen-carriers. Style 

 convex, shortly conical or shortly columnar at the apex. — Leafless^ 

 trailing or twining, succulent shrubs. Umbels terminal or lateral at 

 the nodes, sessile. Flowers small. 



Species few, distiibuted through dry parts of the tropical and subtropical regions 

 of the Old World. 



Corolla-lubes 2-2^> lin. long \. S. viminale. 



2. S. andongense. 



1. S. viminale, R. Br. in Mem. Wern. Soc. i. 51. Stems trailing- 

 or twining, or perhaps forming a bush, sometimes succulent, becoming 

 woody in the lower parts, 1-2 lin. thick in the dried state, glabrous, 

 leafless or with minute rudimentary ovate leaves |-1 lin. long. 

 Umbels lateral at the nodes or terminal, or terminating short 

 lateral shoots, sessile, many-flowered ; pedicels 2J-3 lin. long, 

 minutely and sparsely puberulent. Sepals J-| lin. long, varying from 

 ovate or ovate -oblong to suborbicular, acute or obtuse. Corolla 

 rotate, rotate-campanulate, greenish-white or sulphur coloured, o-lobed 

 nearly to the base; lobes 2-2-^ lin. long, 1-1 J lin. broad, ovate-oblong, 

 obtuse or acute, more or less reflexed along the margins, glabrous. 

 Outer corona arising about J lin. above the base of the staminal- 

 column, annular, pentagonal, about J lin. deep, enclosing the bases of* 

 the inner coronal-lobes, with a truncate and slightly inrolled margin. 

 Inner corona of 5 laterally compressed erect lobes, f lin. long, with the 

 dorsal margin rounded and the inner margin applied to the backs of the 

 anthers. Follicles 2|-4 in. long, J-J in. thick, linear-lanceolate, 

 acuminate, smooth, thinly puberulous. Seeds ^ in. long, J in. broad ; 

 ovate, plano-convex, narrowly margined, subdenticulate or entire at the 

 broad end, minutely puberulous on the convex face and very sparingly 

 on the flat face, with the hairs often grouped in tufts and the margins 

 minutely ciliate. — Haw. Synop. PI. Succ. 13 ; Decne. in DC. Prod, 

 viii. 538 ; A. Rich. Tent. Fl. Abyss, ii. 34 ; Engl. Hochgebirgsfl. Trop. 

 Afr. 342 ; Engl. & Prantl, Pflanzenfam. iv. ii. 251, fig. 73, N-0, 

 and 256 ; Martelli, Fl. Bogos. 54 ; Hiern in Cat. Afr. PI. Welw. i. 689 ; 

 Penzig in Atti Congr. Bot. Internaz. 1892, 349 ; S. Moore in Journ. 

 Bot. 1902, 256. S. aphyllum, Hochst. ex Decne. in DC. Prod. viii. 

 538, not of R. Br. >S'. sp., Hook. Niger Fl. 454. Cynanchum viminale, 

 Linn. Mant. ii. 392. Cynanchum aphyllum, Linn. Syst. Nat. ed. 12, 

 iii. 235. Apocynum viminale, Bassi in Comm. Bonon. ex Roem. k, 

 Schult. Syst. Veg. vi. 113. Euphorbia viminalis, Linn, Sp. PI. ed. 1, 

 p. 452. Asclepias nuda, Schumach. & Thonn. Beskr. Guin. PI. 155. 



Upper Guinea. Gold Coast : Cape Coast Castle, Vogel, 21 ! Krobo Plains^ 

 Johnson, 604 ! Niger Teriitory, Nupe, Barter, 1322 ! 



