410 XCII. ASCLEPIADACE^E. [Dischidtd. 
Pahang, Telom Ridge (Ridley). Perak (Scortechini); Gunong 
Kerbau (Robinson). 
(23) D. parvifolia Ridl. Journ. F.M.S. Mus. v. 41. 
Stem very slender. Leaves ovate acute, base round; nerves 
visible (dry), -5 in. long, *3 in. wide; petioles -I in. long. Peduncles 
■1 in. long or 0; racemes very short, many-flowered; pedicels 
slender, *2 in. long. Calyx-lobes ovate. Corolla campanulate, 
•1 in. long, white, lobes acute, triangular deep pink. Corona none. 
Follicle narrow lanceolate acuminate, 175 in. long. Seed oblong. 
Hob. Mountains. Rare. Selangor, Gunong Mengkuang Lebah 
(Robinson). 
(24) D. viridiflora Ridl. Journ. F.M.S. Mus. x. 146. 
Long slender creeping glabrous plant rooting at distant points. 
Leaves fleshy, lanceolate acuminate blunt, base narrow; nerves 
invisible, 75 in. long, -25 in. wide; petioles -i in. long. Peduncles 
•15 in. long; racemes -i in. long. Flowers *15 in. long; pedicels 
very short. Sepals very short, lanceolate linear blunt. Corolla 
flask-shaped, base wide, gradually narrowed to tip, green turning 
pinkish, glabrous within, lobes short sub-acute. Corona 0. 
Staminal-column stout, wings rather large, yellowish coriaceous. 
Hob. Woods in lowland country, rare. Kelantan, Chaning 
(Ridley). 
Doubtful and Excluded Species 
D. Deschampsi King and Gamble, l.c. 593. Slender twiner. 
Leaves coriaceous elliptic-ovate acute, base round; nerves 
5 pairs with reticulations prominent when dry; 1-5 to 3 in. 
long, 75 to 1 in. wide; petioles thick, *15 to -25 in. long. 
Peduncles 1 in. long, rachis lengthening to 75 in. long. 
Singapore (Deschamps). 
I have not seen this and the flowers are unknown. 
D. Wallichii Wight, Contrib. Singapore Wall. Cat. 8183 is a young 
stage of a Ficus. 
Leptadenia reticulata Wight, Contrib. 47; King, l.c. 595. Singa¬ 
pore (Lobb) is certainly erroneously localised. 
30. PHYSOSTELMA, Wight. 
Twiners; leaves rather thin. Flowers thin-textured. Corolla 
campanulate not fleshy, shortly toothed. Corona lower lobes up- 
curved, upper ones erect. Pollinia oblong truncate with a thin 
transparent outer edge; caudicle short thick, carrier brown, rather 
large. Species about 6, Malay islands and Polynesia. 
Distinguished from Hoya by the thin leaves and thin campanu¬ 
late corolla and horn-like up-curved corona processes. 
Flowers 1-5 in. across . . . . . . (1) P. Wallichii 
Flowers *3 in. across , , . , , , . (2) P. Wrayi 
