56 NINETEENTH ANNUAL REPORT ON THE STATE CABINET. 



LEPTODON, 31ohr. 



L. TRICHOMITRION, Mokr. 



Trees in woods. Sometimes on rocks. Common. Nov., Dec. 



AXOMODON, Hook. & Tayl. 



A VITICULOSUS, L. 



Rocks. Goat Island, Lesqx. Various localities about Niagara 

 Falls, G. W. Clinton. Schoharie, Miss R. Waterbury. Abund- 

 ant on the Helderberg mountains. Always sterile within our limits, 

 the plant bearing pistillidia but no antheridia. 



A. apiculatus, Bryol. Europ. 



Rocks and trees, mostly on mountains. Rocks, Akron, G. W. 

 Clinton. Trees, Poestenkill. November, December. 



Resembles the following species, from which it may be distin- 

 guished by the slight apicnlation at the apex of the leaves and the 

 ciliate-papillate lobes at their base. 



A. obtusifolius, Bryol. Europ. 



Trees in woods. Especially on the maple, (Acer saccharinum.) 

 Common. November, December. 



A. attenuatus, Schreb. 



Base of trees, rocks and ground. Frequent. Nov., Dec. 



A.? tristis, Cesati. 



Trees in woods. Poestenkill. Fruit unknown. 



LESKEA, Eedw. 



L. POLYCARPA, Elirh. 



Trees in low grounds subject to inundations. Swamp south of 

 Greenbush. July. 



L. obscura, Eedw. 



Trunks and roots of trees on low banks of streams. Hudson below 

 Albany. July. 



L. nervosa, Schicaegr. 



Rocks. Niagara Falls, G. W. Clinton. Trenton Falls, James. 

 The specimens are sterile, but believed to belung to this species. 



L. rostrata, Hedw. 



Base of trees and on rocks. Very common. November. 



THELIA, Sulliv. 

 T. hirtella, Hedw. 



Base of trees. Common in Western New-York, G. "W. Clinton. 



November. 

 T. asprella, Schp. 



Base of trees. Common. November. 



This species is quite common in the vicinity of Alban} 7 , but T. 

 hirtella, which in most places is as plentiful as T. asprella, has 

 not yet been observed here. 



