140 



SYNOPSIS OF BRITISH MOSSES. 



h. Bivularia. 

 PI. flaccid, lurid green. L. broadish., soft. Calyptra 

 naked. Caps, immersed. Perist. double. 



283. 0. Sprucei, Mont. St. i inoli, tufted. L. 

 spreading, oblong-ovate or ligulate, apex rounded and 

 tipped with an apiculus, scarcely reflexed, thinly 

 nerved, not papillose. Caps, pyriform, contracted at 

 mouth when dry, strise broad, lid with a short beak. 

 Calyptra campanulate, reddish tipped, large. Perist. 

 ] 6 teeth, in pairs, yellowish, reflexed when dry, and 8, 

 sometimes 16, cilia. 



Trees near rivers. May, June. 



York, Matlock, Glasgow, &c. 



284. 0. rivulare, Turn. St. long, tufted, often 

 floating. L. oblong-ovate, elongate above, flaccid, 

 sometimes subsecund, obtuse, with a strong nerve and 

 small papillae, margin recurved below. Caps, shortly 

 ovate, broadly and obscurely striate, almost immersed. 

 Perist. 8 teeth in pairs, afterwards nearly equidistant, 

 and 16 cilia. Calyptra large, campanulate, dull green, 

 blackish at apex and base. 



Rocks and tree-trunks at edges of streams. 



June. 

 England, Wales, Ireland. 



Tribe xiii. Schistostegace^. 

 47. SCHISTOSTEGA, Mohr. 



285. S. osmundaeea, W. and M. St. J — | inch. L. 

 bifarious, insertion vertical, lanceolate, pale green. 

 Caps, small, subglobose,' mouth large, lid convex, 

 yellow, with a red border. Young plant, when grow- 

 ing in caves, emitting a beautiful golden-green light. 



Sandstone caves and banks. Not rare. March. 



