PLANTS OF NORTH ELBA 



167 



Aulacomnium palustre (Z.) Schwaegr. 



Damp ground, bogs and marshes. Shore of Lake Placid and top of 

 Cobble hill. Mrs Britton. Wood farm swamp and Averyville swamp. 

 June. 



Aulacomnium androgynum (Z.) Schwaegr. 



Ground and rocks. Pulpit rock, where it forms extensive mats, and 

 near Whiteface inn. Miss Marshall. This species may be distinguished 

 from the preceding by its smaller size, smaller leaves and smaller 

 capsules. Both sometimes bear slender subnaked branches, which in 

 A. palustre terminate in a cluster of leaf-like bodies, but in A. 

 androgynum, in a globular mass of granules. 



Atrichum angustatum B. 6° S. 



Cathari)iea angustata Brid. 

 Bare ground and banks by roadsides. Common. 



Atrichum undulatum Bv. 



Catharinea undulata (L.) W. & M. 



Ground and banks of streams. Common. This and the preceding 

 species are similar in general appearance. They are separated by the 

 character of the inflorescence and the margin of the leaves. 



Pogonatum brevicaule Bv. 



Polytrichum tenue Menz. 



Damp earth and shaded banks by roadsides. Raybrook. Easily 

 known by the green coat of its persistent protonema covering the surface 

 of the ground. 



Pogonatum urnigerum (Z.) Bv. 

 Ground and rocks. Indian pass. Rare. 



Pogonatum alpinum (Z.) Roehl. 



Wet or dripping cliffs and moss covered rocks. Scotts ponds. Mrs Brit- 

 ton. Indian pass. 



Polytrichum piliferum Schreb. 



Thin soil covering rocks. Indian pass. Mrs Britton. Raybrook. 

 Distinguished by its small size and by the leaves terminating in a long 

 white hair-like point. 



