300 NEW AND RARE MALAYAN PLANTS. 
Cymes in upper axils; peduncle .25 in. long; pedicels .5 in. long. 
Flowers white, 2 to 3 in a cyme. Calyx-lobes separate half way 
down oblong blunt, edge ciliate, whole calyx .1 in. long. Corolla- 
tube cylindric >in. jong, lobes linear blunt. Stamens small ; 
anthers oblong not apiculate. Style very slender. Follicles oblong 
narrowed and acute at both ends faleate, 1.25 in. long, .5 in. thick. 
Hab. Mountain forests, Selangor, Ginting Sempah, Ridley. 
Var. minor Ridley. _ 
Leaves 4 in. long, 1 in. wide with about 8 pairs of nerves; 
petiole .2 in. long. “Pedunele .1 in. long; pedicels .2 im. long. 
Calyx .8 in. long. Corolla-tube .6 in. long; lobes lnear blunt, .25. 
in. long. 
Hab. Negri Sembilan, Bukit Tangga at 2400 ft. alt., Ridley. 
Allied to FB. jasminiflora Ridley, but the flowers are smaller 
with shorter corolla-tube and small stamens. 
ASCLEPIADACEAE. 
Hoya citrirna Ridley, n. sp. 
Stout, long, pendent plant. Leaves thick, fleshy stiffly coria- 
ceous ovate, base broad, round, subcordate; nerves three conspicuous: 
when dry with about 4 pairs of lateral nerves from the central nerve 
broken up into reticulations large and lax, 4 to 4.5 in. long, Seale 
wide; petiole very thick .75 in. long. Peduncles stout, 2.24 in. 
long; raceme thickened lengthening to over 1 in. long with very 
numerous close set broad bracts. Pedicels .6 in. long. Flowers 3 
in. wide; sepals ovate blunt. Corolla-lobes triangular ovate acute, 
light yellow. Corona pinkish red, lower lobe long acute, lanceolate. 
Hab. Limestone precipices, Selangor, Batu Caves, Ridley. 
Perak, Ulu Bubong on a tree in jungle, Kunstler 10316; Batu 
Kurau, Scortechini 1626. 
The Perak plants were referred by King and Gamble to H.. 
parasitica Wall. from which they differ in the ovate cordate leaves, 
with three distinct nerves from the central one of which rise about 
+ pairs of lateral nerves quickly broken up into reticulations. The 
flowers are very similar in both species except in colour, these being 
yellow with a red corona; those of H. parasitica pinkish white with 
a white corona, the corolla-lobes in this species are also triangular 
acute, not cordate. 
Cynanchum Seimundii Ridley, n. sp. 
Herbaceous climber, glabrous except inflorescence. Leaves thin 
membranous, ovate acute, base cordate; nerves 6 pairs, 6 in. long 5. 
in. wide ; petiole 3 in. long or smaller. Corymbs axillary; peduncle 
1.5 in. long. Flowers about 20; pedicels .5 in. long ‘puberulous. 
Calyx-lobes very short, rounded ovate. Corolla .25 in. across, tube 
very short, lobes valvate lanceolate acute, spotted at the tips. 
Jour. Straits Branch. 
