21 
13. O. corymbosa Linn. 
== = Root bi or perennial. 
7 Pedicels very slender, usually from the uppermost axils. 
15. O. horneriana Miq. 
¥ F Pedicels shorter, from all the axils. 
um Flowers usually solitary. 
16. O. heynii Don. 
u wx Flowers usually three in each axil. 
17. O. tenelliflora (Blm.) Elm. 
OPHIORRHIZA LINN. 
* Flowers single or in pairs. 
1. O. biflora n. sp. Herbaceous, probably an annual, 
spreading from the base into many decumbent or suberect 
branches of which the longest are 8 cm.; stems short pu- 
bescent throughout. Leaves opposite or whorled from the 
apex of short branchlets, thin, 3 to 5-nerved, lanceolate or 
narrowly oblong, acute at apex, base attenuate, 1.5 cm. 
long including the 2 mm. long petiole, 5 mm. wide, lower 
surface paler, both sides bearing a few short hispid nairs 
especially along the edges; stipules bristle like. Flowers 
white, terminal, single or in pairs, short pedunculate or 
subsessile, subtended by bristle like bracts; calyx pubescent, 
bearing 5 acute segments, corolla 6 mm. long including the 
5 segments, tubular, glabrous on the exterior; its segments 
half the entire length, quite broad and rotately spreading, 
acute, finely pubescent on the ventral surface, the throat 
more densely pubescent with yellowish hairs; stumens 5, 
not protruding, inserted upon the corolla near the base; anthers 
linear, at least 1 mm. long, truncate or obtuse at both 
ends; filaments slender, glabrous, style exceeding the throat, 
subglabrous, somewhat flattened, apex bifid; capsule much 
compressed and emarginate, 6 mm. wide, 3 mm. long, pu- 
bescent, splitting at the base in 2 broad valves, each of 
which bears 2 minute bracts on the sides, central placen- 
ta forked; seeds numerous, angular, its sides light brown 
and with darker colored edges. 
