32 LESQUEREUX — CATALOGUE 
under the influence of wind and fog, Mr. Bolander sent me a large specimen, whose 
branches on one side are elongated in slender filiform stolons, from six inches to one 
foot long, while on the other side the stem and branches are thick, short, with large 
leaves. The filamentous part, according to Mr. Bolander’s remarks, was hanging from 
a branch exposed to wind and fog, while the other part, presenting a normal develop- 
ment, was, by its extension to the other side of the trunk, preserved against this ac- 
tion. Specimens of H. cireinale and H. Nuttallii are subjected to the same peculiar de- 
velopment. Ican but therefore consider the multiplication of species from such poly- 
morphous mosses as a hazardous task. I have admitted as a species the more distantly 
‘related form of H. Breverianum, which, growing in dense tufts on dry rocks, has a 
black color, short stems, short obtuse leaves, and in appearance is totally different 
from H. stoloniferum. But even on dry rocks, the part of the cespites which is not di- 
rectly exposed to the sun’s influence passes to a yellowish green color, and bears some 
more elongated attenuate branches, even stolons, showing more and more an approach 
to H. stoloniferum or H. myosuroides, for Professor Muller does not separate these spe- 
cies. Mr. Mitten has described a number of forms which are more or less intimately 
related to H. stoloniferum, and which, if the opinion of Muller is right, should be re- 
united as well as H. Breverianum as varieties of H. myosuroides. 
216. H. Breverianum, Lesqx. 
Hab. on metamorphic sandstone around San Francisco, ol. 
217. H.aggregatum, Mitt. 
H. Breverianum var., Sulliv. and Lesqx. Musci Exsice. Amer., Hd. 2d, No. 427, 
Hab. in deep canons; Oakland, on trunks, ol. 
218. H. aplocladon, Mitt. 
Hab. N. W. coast of America, Douglas. 
219. H.lentum, Mitt. 
Hab. same as the former, Douglas. 
23. CAMPTOTHECIUM, Bryol. Eur. 
220. H. lutescens, Hnds. 
Hab. Vancouver Island, Lyall ; California, Coulter; N. W. Coast, Douglas. 
Received from Victoria, Oregon, through Mr. Bolander. 
221. H. Nuttallii, Wills. 
Hab. on trees, California, common, Bol., Big. ; Vancouver Island, Lyadl, 
Douglas. 
Var. stoloniferum, ramis elongatis, aggregatis filiformibus lutescentibus. 
Hab. on trees. Sent by Mr. Bolander. A very remarkable variety. The 
stems are creeping, as in the normal form, and bear shorter and more slender capsules, 
and the crowded branches are elongated filiform, depending from the branches of trees. 
222. H. arenarium, Lesqx. 
Hab. on sand, around bushes near the shores, San Francisco, Gol. 
