XCII. ASCLEPIADACEAi. 
Physostelma.] 
411 
(1) P. Wallichii Wight, Contrib. 40. Hoya campanulata Bl. 
Bijdr, 1064; King, l.c. 578; Bot. Reg. 54; Bot. Mag. M 545 - 
A slender wiry terrestrial twiner. Leaves thinly fleshy, elliptic- 
oblong acuminate, base cuneate; nerves 6 to 7 pairs, inarching 
in an intra-marginal nerve far from the edge, 2-5 to 6-5 in. long, 
1 to 2-5 in. wide; petioles -25 in. long. Peduncles 1 to 2 in. long, 
pedicels very slender, 1 to 1-25 in. long. Calyx-lobes subulate. 
Corolla campanulate thin, about 1 in. across, creamy white, lobes 
boat-shaped. Corona, lower lobes spreading, up-curved, upper 
ones erect. Follicle straight, cylindric, 6 to 8 in. long, *2 in wide, 
green striped white. Hab. Sandy spots near the sea, and thickets 
in mountain forests. Singapore, Serimbun; Tampims road; 
Kranii. Pahang, Tahan River. Perak, Thaiping Hills; Bujong 
Malacca; near Tapah; Relau Tujor (Wray). Dindings, road to 
Sungei Rotan (Curtis); Lumut. Disfrib. Java, Sumatra Borneo. 
(2) P. Wrayi Ridl. Hoya Wrayi King and Gamble, l.c. 579. 
Leaves thin fleshy, lanceolate blunt, base long attenuate; 
nerves very inconspicuous, 4 pairs; 3-5 to 4 in. long, 1 to 1*25 in. 
wide; petioles thick rugose. Inflorescence not seen; pedicels 
1 in. long. Calyx-lobes linear-oblong. Corolla campanulate- 
rotate, *3 in. across, edges fimbriate crisp, villous inside. Corona 
processes lower lobe an up-curved spur, upper similar erect; fila¬ 
ment tube free from corona. Pollinia with inflated cup-like 
caudicles. Hab. Perak, Batang Padang (Wray). Very rare. 
38 . PYCNORHACHIS , Benth. 
A rough hairy twiner. Flowers in reflexed pairs spirally 
arranged round the long fleshy raceme, solitary or 2 or 3 on a 
peduncle. Calyx 5-lobed with 5 to 10 scales. Corolla turbinate 
tube short, lobes valvate, purple. Corona-scales 5, spreading at 
base of column; anthers erect with hyaline appendages. Polimia 
1 in each cell, cylindric waxy erect, caudicle short. Carpels . 2 > 
sunk in tube; style apex conical. Fruit curved, smooth cylindric. 
Seed plumed. Species 1. . . 7 _ 
( 1 ) P. Maingayi Hook. fil. F.B.I. iv. 63; King, l.c. 594 -, 
Leaves rather thin, oblong-ovate abruptly cuspidate acuminate, 
base shortly cordate hairy all over, 4 to 6 m. long, i*5 to 2 in. 
wide- petioles *25 in. long. Racemes 3 to 6 in. long; peduncle 
1 to 2 in long. Calyx minutely red-hairy outside, lobes linear- 
lanceolate,' -i in. long. Corolla deep purple, tube very short with 
a fringed annulus, lobes *25 in. long, subulate lanceolate, base broad. 
Follicle 5 in. long, *7 in. wide, curved, glabrous. Hab. Malacca 
(once collected by Maingay). Extremely rare. 
32 . CEROPEGIA, Linn. 
Twining herbs, root-stock tuberous or with fleshy roots. 
Flowers moderate-sized or large, racemose or umbellate. Calyx 
