26 LESQUEREUX CATALOGUE 



175. A. palustre, Schwaegr. 



Hab. swamps near Mendocino, JBoL ; Cascade Mts., Lyall. 



BAETKAMIA, Hedw. 



176. B. stricta, Brid. 



Hab. on rocks and ground near San Francisco, Bol. 



It differs from the European form only by its pedicel, which is round and not 

 square, obtuse under the capsule ; agreeing, therefore, with Bridel's description, which 

 does not mention this peculiarity. 



177. B. thyphylla, Brid. 



Hab. foot of Mt. Dana, ditches, abundant, Bol. It is the Alpine form, in 

 compact tufts, with short stems and pedicels ; also Cascade Mts., Lyall. 



178. B. fontana, Brid. 



Hab. Yosemite Valley, Big Trees; Clear Lake, on wet rocks, Bol., Brew. 

 Appears common in the Sierra Nevada Mts. ; Fort Colville, Lyall. 



179. B. Menziesii, Turn. 



Hab. on shaded rocks ; very common in California, and gathered by all the 

 botanists who have explored that country, Menzies, Big., Brew., Bol., 

 Bauer, etc. 



Var. foliis latioribus, brevius acuminatis, capsula longiore, ovato-elongata, ore 

 la iori nudo, vel membrana Integra circumdato. 

 Hab. on rocks, Bol. 



With the normal form, whose capsule is oval, sometimes nearly round, Dr. 

 Hampe has made a new species, under the name of 0-lypliocarpa Baueri. But the cap- 

 sules of this normal form have generally a well developed peristome, though, indeed, 

 this peristome is sometimes replaced by a pellucid membrane, lacerated in the form 

 of irregular teeth, or even is totally wanting. The moss, which I consider as a variety 

 as described above, has generally a naked mouth, though sometimes it shows traces of 

 even a well formed peristome. 



TIMMIA, Hedw. 



180. T. megapolitana, Hedw. 



Hab. Vancouver Island, Lyall. 



POLYTRICHACEyE. 



ATRICHUM, Tal. Beauv. 



181. A. undulatum, Tal. Beauv. 



Hab. on rocks, Mission Dolores, Bol. ; Oregon, Wilkes 1 U. 8. Exp. ; Fort 



Colville, Lyall. 

 (26) 



