OF PACIFIC COAST MOSSES. 37 



254. H. uncinatum, Hedw. 



Hab. Bridal Veil Falls, Mono Pass, near Merced River, Big Tree grove, 

 and foot of Mt. Dana, Bol.; wet banks near King's River, Brew. ; 

 Cascade Mts., Lyall. 



255. H. commulatum, Hedw. 



Hub. east side of Mono Pass, sterile, Bol. 



256. H.'filicimim, Linn. 



Vur. Vallia-clusce. 



Hab. Fort Colville, Lyall. 



g 13. RHITIDIUM, Sulliv. 



257. H. robustum, Hook. 



Hab. Western Coast of North America, Menzies ; Fort Colville, Lyall. 



1 14. DREPAN1UM, Schp. 



258. H. fertile, Sendt. 



Hab. Big Trees, on humected rocks, Bol. 



A small specimen only was received. It has the essential characters, the form 

 of the leaves, the areolation, capsule, etc. But no male flower could be found on the 

 plants. The species is therefore somewhat uncertain. 



259. H. subimponens, Lesqx. 

 H.plumifer, (?) Mitten. 



Hab. on shaded rocks in woods, from the plain, Oakland, to the mountains, 



Big Trees, Long Valley, Bol. ; Vancouver Island, Lyall. 



It is still doubtful if this species is the same as that described by Mr. Mitten as 

 H. plumifer (among other characters) with operculo brevi sululato rostralo, and the gen- 

 eral appearance of H. Crista-Castrensis, Linn. In our moss the lid is conical, some- 

 times obtuse, sometimes more elongated, pointed, but never rostrate; and its likeness to 

 H. imponens is so remarkable that it is difficult to separate both species. 



260. H. circinale, Hook. 



Hab. base of trees, Siskiyou Mts., 4,000 to 5,000 ft., Brew.; on living red- 

 woods exposed to winds and fogs, 2,000 to 2,500 ft., Bol. ; Oregon, 

 Wilke^ U. 8. Exp. ; Vancouver Island, Lyall. 



1 15. LIMNOBIUM, Bryol. Ear. 



261. H. arcticum, Sommerf. 



Hab. foot of Mt. Dana, entirely submerged, in streamlets, apparently very 

 rare, and seen but once, Bol. 



I 16. HYPNUM, Schp. Synop. 



262. H. giganteum, Schp. 



Hab. Fort Colville, Lyall. 



(37) 



