228 asclepiadeje. [Pentasacme. 



1, P. Champ ioni, Benth. in Kew Journ. Bot. v. 54. Stems simple, 

 1 to H ft. high, glabrous, as well as the whole plant. Leaves narrow-lanceo- 

 late, acuminate, acute, 2 to 3 in. long, 3 to 4 lines broad, without the very 

 long point of P. caudata, and not half so broad as in P. TVallichii. Flowers 

 much like those of P. caudata, but 6 to 8 together, in shortly pedunculate 

 umbels or very short racemes. Pedicels slender, 2 to 4 lines long. Sepals 

 lanceolate, acute, about 1 line. Corolla-lobes about 4 lines long, very narrow, 

 except at the base ; the scales short, broad, truncate, and toothed at the top. 

 Follicles linear or oblong-linear, broader near the base. 



On rocks in waterfalls, Champion, Wilford ; also Hance and Wright. Not known from 

 elsewhere, unless it should prove to be a variety of the P. caudata from Silhet. Our spe- 

 cimens, however, appear to be constantly distinct in the shape of the leaves and some other 

 points. 



9. DISCHIDIA, R. Br. 



Corolla urceolate, with a globular or ovoid tube, and obtuse spreading lobes, 

 valvate in the bud. Staminal corona consisting of 5 scales inserted at the 

 base of the gynostegium, linear, bifid, and spreading or recurved at the top. 

 Pollen-masses erect, linear-oblong, attached in pairs. Stigma not beaked. 

 Follicles smooth. — Stems usually creeping on rocks or trees, and rooting at 

 the nodes. Leaves opposite, thick and fleshy, here and there in several species 

 converted into pitchers. Flowers small, in axillary clusters or umbels. 



A south Asiatic genus, chiefly abundant in the Indian Archipelago. 



1. D. chinensis, Champ, in Kew Journ. Bot. v. 55. Stems succulent, 

 but slender. Leaves ovate, \ to f in. long, thick and fleshy, cuneate at the 

 base, with a very short petiole. None of the specimens show any of the 

 pitchers so frequent in the genus. Flowers in sessile axillary clusters. Sepals 

 minute. Corolla with a globular tube rather more tlian 1 line diameter ; the 

 lobes ovate, obtuse, one half shorter with a few hairs in the throat. 



In ravines on rocks, Mount Victoria, Champion; also Wright. Not known out of the 

 island. 



10. HOYA, R. Br. 



Corolla rotate ; the lobes ovate, valvate in the bud. Staminal corona of 

 5 scales inserted on the gynostegium, and usually spreading horizontally, the 

 inner angle bearing a small tooth incumbent on the anther. Pollen-masses 

 erect, oblong, attached in pairs. Stigma not beaked. Follicles smooth or 

 with wing-like appendages. — Stems twining or creeping, and rooting at the 

 lower nodes. Leaves opposite, often, but not in all the species, thick and 

 fleshy. Flowers in lateral umbels. 



A considerable genus, dispersed over tropical Asia, with one African species. 



1. H. carnosa, R.Br.; Dene, in DC. Prod. viii. 636. Stem succulent. 

 Leaves from broadly ovate-cordate to oval-oblong, shortly acuminate, 2 to 3 

 in. long, thick and fleshy, on short petioles. Flowers succulent, in rather 

 large umbels, on short common peduncles. Pedicels 1 to 1|- in. long, pubes- 

 cent. Corolla expanding to a diameter of 7 or 8 lines, of a dull white, with 

 a pink centre, the lobes broadly ovate, the gynostegium spreading like a star 

 in the centre. Follicles linear, 3 or 4 in. long, smooth. 



