92 HANDBOOK OF BRITISH MOSSES. 



cated, with erect, attenuated, often drooping branches; leaves 

 squarrose, cordate, strongly acuminate, striated, sharply 

 toothed ; nerve reaching nearly to the tip ; fruitstalk long, 

 even ; sporangium oblong, arched, lid rostrate. Hook, fy Wils. 

 t. xxvi.; Eng. Bot. t. 1648.; (Moug. Nest. n. 142.) 



On the ground, in woods and orchards. Common. Bearing 

 fruit in autumn and early spring. 



Pseudomonoicous. Stem partly prostrate, arched or ascend- 

 ing, densely clothed with leaves, and sending down fascicles of 

 rootlets, irregularly branched ; branches erect, often dendroid ; 

 branchlets often two-ranked, attenuated at the extremities, 

 curved; leaves widely spreading, or squarrose, broadly cordate, 

 suddenly acuminated, strongly toothed, with a thick nerve 

 reaching nearly to the summit, striated below; cells of the 

 upper part of the leaves extremely narrow with the exception 

 of the marginal cells which form the serratures; perichsetial 

 leaves squarrose, nerveless ; vaginula hairy ; fruitstalk an inch 

 long, even ; sporangium oblong, subcylindrical, curved, cer- 

 nuous ; lid with a long, curved, slender, acute beak. 



A fine though common species, easily known from H. ruta- 

 bulum by its rostrate lid, very acuminate, strongly striated 

 leaves, and smooth stem. 



e. EHTNCOSTEQIUM, 



25. H. ruscifolium, Neck. ; stern creeping, irregularly 

 branched ; branchlets erect, arched ; leaves spreading, ovate, 

 pointed, subsecund, rather rigid, serrate ; nerve reaching 

 more than halfway up; fruitstalk even; sporangium ovate, 

 slightly curved, cernuous; lid rostrate. Hook. Wils. t. xxvi. ; 

 Eng. Bot. t. 1275.; (Plate 6, fig. 1) ; Moug. % Nest. n. 427. 



On stones in rivulets, sluices, etc. Very common. Bearing 

 fruit in winter and early spring. 



