LIST OF MOSSES. 47 



DESMATODON, Brid. 

 T). ARENACEUS, Sulliv. Sf Lesqx. 



Stones ; Devil's Hole and Caledonia, Gr. W. Clinton. Rare. July. 



BARBULA, Hedw. 



B. UNGUICULATA, Hedw. 



Ground, claybanks. Variable and common. Nov. -April. 



B. CAESPITOSA, Schwacgr. 



On the ground in woods and about tlie roots of trees. Common. 



June. 

 B. TORTUOSA, 5. 



Rocks. Goat Island, Lesqx. Common about Niagara Falls, G. W. 



Clinton. Helderberg mountains. Not frequent. June. 



B. CONVOLUTA, Hedw. 



Ground on mountains. Helderberg mountains, growing with Brjum 



pyriforme, on ground on which charcoal had been burned. Rare. 

 B. MUCRONiFOLiA, Schwaegr. 



Roots of an elm Siubject to inundation, Schoharie, Miss R. Water- 



BURT. Stones ; Devil's Hole and Portage, G. W. Clinton. June. 

 B. fragilis, Wils. Trichostomum fragile, Hook. 



Humected rocks by waterfalls. Ausable river, near Lake Champlain ; 



sterile, Lesqx. 



Closely caespitose ; stems erect, simple or forked, tomentose at the 



base ; leaves closely imbricated, erect, plane on the margin, rigid, very 



fragile, twisted when dry, lanceolate-subulate with an excurrent costa ; 



areolation hyaline near the base, minute, chlorophyllose and papillose 



above ; capsule erect, ovate-oblong, scarcely curved ; lid obliquely 



long-beaked ; teeth of the peristome convolute, very thin, fugacious ; 



inflorescence dioecious. 



TRICHOSTOMUM, Hedw. 

 T. tortile, Schrad. 



Sandy ground, banks by roadsides, etc. Common. Nov. - March. 



T. VAGINANS, Sulliv. 



On the ground; Shawangunk mountains, C. F. Austin. 



' November - March. 



T. PALLIDUM, Hedio. 



Clayey ground, fields and open woods. Common. June. 



T. GLAucESCENS, Hedw. 



Cliffs and crevices of precipitous rocks. Adirondack mountains. 



Ravine south of Albany. Rare. June. 



DIDYMODON, Hedw. 



D. RUBELLUS, Roth. 



Rocks, especially in ravines. Catskill mountains. Greenbush, near 

 Harlem R. R. bridge. Rare. June, July. 



