WILLIS : PODOSTEMACEÆ 
Thallus crustaceous. Stamens 
very long ... ... . H. Johnsonii, Willis. 
Thallus ribbon-like, branched. 
Stamens of varying lengths H. lichenoides, Kurz. 
HYDROBRYUM GRIFFTTHII, Tub, 11. cc., Weddell, 
Bentham, 11. cc. ; Hooker in FI. Br. I. ; Podostemon Grifhthii, 
Wall. MS., Griffith in As. Res., XIX., Gardner, 1. c. 
Thallus crustaceous. Stigmas lobed or toothed. Fruit 
12-ribbed, isolobous. 
Primary axis unknown. Thallus crustaceous, more or less circular 
in form, irregularly and deeply lobed, to 10-12 cm, in diameter, 
thin, reddish green, hard. Secondary axes go, scattered irregularly 
over the upper surface, in flowering condition prostrate, with 4-7 
thick cymbiform bracts, the spathe boat-shaped, oval when closed, 
splitting irregularly on the upper side. Flower nearly prostrate, 
small, sessile. Stamens 2, united of their length, slightly exceeding 
the gynæceum. Ovary ellipsoid, symmetrical ; stigmas sessile, 
obcuneate to ovate, dentate, the upper smaller. Fruiting pedicel 2-3 
mm. long, ascending. Fruit 12-ribbed, isolobous, both valves persisting, 
with three veins on each decurrent into the pedicel, usually nearly 
prostrate . 
In mountain rivers and streams, Assam and Sikkim. 
First discovered by Griffith. Khasia Mountains in the 
Bogapani and Kalapani rivers near Cherrapunji, Griffith, 
2,436, Kew dis. ! Khasias, J. D. Hooker ! Kalapani river, 
Willis Kamyoom, Namtuwa, in the hills of N.E. Assam, 
Griffith. Kurseong near Darjeeling, 4,000 feet, Rev. P. 
Decoly,t Feb. 1899 ! 
Probably common from Sikkim to Burma, and perhaps 
in S.W. China or Siam. A very distinct species, resembling 
* On rocks on right bank, just above the bridge on the Cherrapunji- 
Mawphlang road, where a small stream enters the Kalapani under a 
culvert. 
t M, Decoly kindly described the exact spot to me, and I searched it 
carefully without success. The species may have been exterminated there 
in the cyclone that caused the landslips at Darjeeling. The locality is the 
river running about 1,000 feet below a village about 1 mile beyond 
Toong station going towards Kurseong, and is easily recognized by a tea 
factory standing near it, as well as a rifle shooting range a little further up 
the stream. 
