OF INDIA AND CEYLON. 
2:^9 
the other Hydrobryiims in its morphological construction, 
but easily distinguished by its fruit and usually by the 
sfcigmas, which resemble those of the S. American Lo- 
phogynes. The fruit of some of the Dicræa Wallichii group 
is very similar. The stigma of H. lichenoides is also often 
dentate, but not so markedly. 
H. SESSILE, Willis, sp. nov. 
Thallus branched. Fruit smooth, sessile. 
Primary axis not known. Thallus 3-10 mm. wide, and covering an 
area to 10 cm. diameter, pinnately branched in acropetal alternate 
succession, branches closely approximated and sometimes more or less 
confluent into a crustaceous thallus. Secondary axes marginal, 00 , 
one at each axil of the branching, and along sides of branches ; 
vegetative condition not seen, but probably as in other spp.; in flower- 
ing condition consisting of 5-7 prostrate or nearly prostrate bracts, 
the upper larger, helmet-shaped, often winged on the back. Spathe 
boat-shaped, dehiscent on the upper side, occasionally slightly scabrous. 
Flower almost included, the stamens and stigmas projecting. Stamens 
2, very long, their common axis equalling the gynæceum, their 
partial filaments the ovary. Staminodes linear, equalling gynæceum. 
Ovary nearly globose, curved upwards, smooth. Stigmas long, nearly 
equalling the ovary, linear, entire, the lower larger. Capsule smooth, 
nearly sessile, globose,, 1 mm. in diameter, dehiscing obliquely, one 
valve deciduous. Seeds co . 
Streams of the Western Ghats, rare. Beltangadi in S. 
Kanara, C. A. Barber, S. Ind. Flora, No. 2,520 ! 
A very interesting species, with characters which unite 
several distinct groups. It has somewhat the fruit of 
Griffithella Hookeriana, and the general characters other- 
wise of the other Hydrobryums of the Zeylanidium 
sub-genus. It is interesting to note that the thallus, as in 
H. lichenoides, tends at times to become crustaceous, like 
that of H. olivaceus. The plant also seems to have relation- 
ships to Farmeria. 
H. OLIV AGEUM, Tub, 11. cc., including H. griseum, Tul., 
11. cc. ; Podostemon olivaceus and griseus, Gardn., 1. c., 
Wight, leones, t. 1,918, P. olivaceus, Wedd., 1. c. ; Hooker 
in FI. Br. India ; Warming, 1. c. ; Podostemon Gardneri, 
