LXXIV. RUBIACEiE. 
39 
Ophiorrhiza.] 
top of Batu Caves; Ginting Bidai; Semangkok. Perak, Ipoh 
(Curtis). 
This is in part the plant referred by King to 0 . Harrisiana var. argentea, 
an Indian plant. 
(10) O. scabrella Ridl. 
Shrubby plant over a foot tall, branched; young parts mealy 
velvetv. Leaves sub-equal, membranous, oblong-lanceolate, base 
long narrowed, edge slightly thickened, scabrid above; nerves 
io pairs, slender distant, upper surface smooth, dark green, 
beneath pale whitish, glabrous except midrib and nerves scurfy, 
5 in. long, 2 in. wide or less; petioles slender, i in. long. Stipules 
very small, acuminate. Cymes terminal, -25 in. long, few-flowered, 
pubescent, on a pubescent peduncle -5 in. long. Calyx short 
campanulate, pubescent, with short teeth. Corolla -15 in. long, 
white. Fruit not seen. Hab. Woods, rare. Adang islands, Pulau 
Butang (Ridley 15894). Distrib. Siam. 
This has been called by me Harrisiana var. argentea, but the leaves are 
equal, much larger and with a peculiar edging of short processes, making 
it scabrid, and the flowers are smaller. 
(n) O. communis Ridl. Journ. Roy. As. Soc. S. Br. 61, p. 16. 
O. mungos King in part, not of Linne. 
Herb not or little branched except in strong plants, pubescent 
or hairy. Leaves ovate or lanceolate-acuminate, both ends equal, 
glabrescent with a few scattered hairs above; nerves beneath and 
occasionally whole surface pubescent, 4 to 6 in. long, 1 to 1*5 in. 
wide; petioles 1 in. long. Stipules setaceous. Peduncle 1 in. 
long or more. Cyme-branches slender, often over 1 in. long, 
glabrous or puberulous. Flowers white, rarely pink; pedicels as 
large as calyx. Calyx ovoid, lobes short, blunt. Corolla tubular, 
lobes short. Capsule transverse oblong, upper margin straight, 
slightly puberulous. Hab. Common in forests low country to 
5000 fit. altitude. Negri Sembilan, Tampin; Bukit Sulu (Cantley). 
Selangor, Rawang; Ginting Bidai (flowers pink). Sempang. 
Bindings, Pangkor. Perak, Thaiping Hills to top; Telok Pinang. 
Pahang, Telom; Kwala Lipis (Machado). Kedah, Yan. Distrib. 
Borneo. 
(12) O. singaporensis Ridl. Journ. Roy. As. Soc. S. Br. 61, 
p. 1 7. 
About a foot tall, little-branched ; stem succulent, hairy above. 
Leaves oblong-lanceolate acuminate, blunt, base narrowed, pale 
beneath, 5 to 6 in. long, 1*5 to 2 in. wide; petioles hairy 1 in. long. 
Stipules setaceous, hairy. Cyme hairy; peduncle *5 in. long; 
branches as long. Flowers white, short, pedicelled. Calyx short 
sub-cylindric, lobes lanceolate. Corolla-tube -25 in. long, cylindric, 
lobes very short, oblong, hairy outside. Capsule hairy, *25 iu. 
wide, broad and shaped rather deeply indented. Hab. Common 
25 
