38 . MR. W. MITTEN—BRYOLOGIA OF THE SURVEY 
H. sPLENDENS, Din. 
Hab. Saskatchewan, Bourgeau ; Vancouver Elend; Lyall and Wood; 
British Columbia, Lyall. 
Hypnum spectabile, Wils. MS., from Russian America, is pro- 
bably H. Ruthenicum, Weinmann, Syll. Musc. Frond.; and his 
comparison of his specimens with Hedwig’s figure of Leskea 
filiculiformis, Sp. Muse. t. 50, is most just and almost conclusive, 
for it gives a good idea of the size and appearance of the species 
even better than it does of the Hypopterygium for which it was 
intended. 
CLIMACIUM, W. et M. 
C. DENDROIDES, Linn. 
Hab. Pend Oreille River, British Columbia, Lyall. 
NECKERA, Hedw. 
N. Menziesin, Hook. et Wils. 
Hab. Fort Colville, British Columbia, Lyall. 
An authentic specimen in Sir W. Hooker’s herbarium proves 
the Mnium heteropterum mentioned by Dr. Sibthorp in the ‘ Flora 
Greca’ to be this moss,—at least so far as can be ascertained 
without fructification, in which in this tribe there is frequently a 
greater difference than in any other part of the plant. 
N. DOoUGLASII, Hook. 
Hab. Vancouver Island, Wood; British Columbia, Lyail. 
Homara, Brid. 
H. oBTUSATA, Mitten, Musci Ind. 
Hab. British Columbia, Lyall. 
A few imperfect specimens, apparently identical with the 
Indian species, which differs from H. trichomanoides, Schreb., in 
its more obovate leaves more rounded at their apices, the nerve 
sometimes imperceptible, and the cells in the apex shorter. 
THAMNIUM, Schimp. 
T. NECKEROIDES, (Hypnum) Hook. Musc. Exot. t. 58. 
Hab. Vancouver Island, Wood. 
One species only is enumerated by Sullivant in the United 
States, T. Alleghaniense, C. Müller ; but there are the specimens of 
T. neckeroides collected by Drummond near St. Louis, no. 119; 
and T. alopecurum, (Hypnum) Linn., was sent from Boston by 
ta. 
