S80 Lxxxv. ASCLEPiADE^ (bi?own). [Pentarvhinum. 



]bower Guinea. Lower Congo : Kisantu, on the Inkissi River, Oillet, (ex 

 De Wildeman Sf Durand). Angola: Am briz and by the River Kuanza, Jlfow^eiro / 

 Quizembo, Welwitsch, 4199 ! Lonnda ; in thickets near Penedo, Welwitsch, 4237! 

 Gohnigo Alto; at Elinda in Terras de Bumba, Welwitsch, 4238 ! borders of forests 

 along tbe Quiapose River, Welwitsch, 4239 ! Icolo e Bengo ; near the Lagoa de 

 Foto, Welwitsch, 4240 ! Benguellu ; in the rocky thickets of Nene, towards Empa- 

 lanca, Welwitsch, 4247 ! 



The Angolan plant diffe'-s from the Abyssinian only in the relative size 

 of the staminal-columi). According to Monteiro the "flowers have a delicious 

 odour," jind according to Welwitsch they are white or the corolla is green and 

 the corona brilliantly white. 



24. PENTATHOPIS, R. Br. ; Wight &l Arnott, Contrib. Bot. 52. 



Calyx 5-partite. Corolla 5-lobed nearly to the base ; lobes suberect, 

 •with spreading tips, overlapping to the left and more or less twisted to 

 the right in bud. Corona simple, arising from the staminal-column, of 

 5 laterally compressed lobes, adnate for half to two-thirds of their 

 length to the backs of the anthers. Staminal-column arising from the. 

 base of the corolla. Anthers with membranous appendages inflexed 

 over the truncate apex of the style. Pollen-masses pendulous, solitary 

 in each cell of the anthers, affixed in pairs by short slender caudicles to 

 the pollen-carriers. Follicles lanceolate, narrowed into a beak, smooth. 

 Seeds crowned by a tuft of hairs. — Slender twiners with opposite 

 petiolate leaves, and sublateral or subaxillary umbels of small flowers. 



Species about 6; the genus extends through Arabia, Beluchistan, the drier parts 

 of India into China and the Malay Archipelago. There is no outer corona as 

 desciibed by Bentham in Benth. et Hook. f. Gen. PI. ii. 764. 

 Umbels 3-6-flowered ; pedicels 3-8 lin. long ; 



corolla-lobes triangular, acuminate or tailed . 1. P. cynanchoides. 



Umbels 8-10-flowcred ; pedicels 2|-3 lin. long ; 



corolla-lobes deltoid, obtuse, . . . .2. P.fasciculatus. 



1. P. cynanchoides, R. Br. in Salt, Voy. Abyss. Append. Ixiv. 

 Stems slender, twining, glabrous, except in the axils of the leaves and 

 at the base of the young shoots, which are more or less pubescent. 

 Leaves spreading; petiole 1-4 lin. long; blade J-1 J in. long, J-1 in. 

 broad, oblong, ovate or elliptic ovate, acute or obtuse, mucronate, more 

 or less fleshy, glabrous. Umbels subaxillary, 3-6-flowered ; peduncles 

 slender, 1-3 lin. long, or sometimes almost absent ; pedicels • 3-5 

 lin. long, filiform, sparsely puberulous. Sepals ^-J lin. long, ovate^ 

 acuminate, sparsely puberulous, or subglabrous. Corolla pentagonal 

 and acuminate in bud, 5-lobed nearly to the base ; lobes 4-5 lin. 

 long, narrowly linear from a triangular base, twisted in bud, gla- 

 brous outside, minutely puberulous within. Coronal-lobes arising 

 J lin. above the base of the staminal-column and nearly or quite 

 reaching to its apex, varying in different flowers in the same umbel, 

 J lin. long, compressed, sublriangular in outline viewed sideways, sub- 

 truncate at the base, adnate to the column for | of their length, with a 

 free narrowly oblong subacute or acute apex. Follicles 2-3 in. long, 



