34 MR. W. MITTEN—BRYOLOGIA OF THE SURVEY 
(Lsothecium, Bryol. Europ.) 
H. STOLONIFERUM, Hook. Musci Exot. t. 74. 
Hab. Vancouver Island, Wood; British Columbia, Lyall; N.W. 
America, Menzies ; Nootka, Barclay. 
Leaves from the primary stem, where the perichetia are pro- 
duced, ovato-lanceolate, serrulate, slightly plicate, those of the 
ramuli elliptic-lanceolate, minutely papillose on the back above 
the middle, nerve smooth, continuing to three-fourths of the length 
of the leaves. Perichzxtial leaves subulate, serrulate, and recurved, 
from an oblong, erect, faintly two-nerved base. Seta smooth. 
Peristome as figured. This fine species corresponds entirely in 
habit with the European H. myosuroides, Dill. 
H. SPICULIFERUM, sp. nov. Foliis infra perichetium e basi cordato- 
ovata lanceolato-acuminatis nervo ad 3 evanido dorso levibus, mar- 
ginibus inferne reflexis superne serrulatis, superioribus angustioribus 
dorso papillosis, ramulinis elliptico-lanceolatis acutissimis concavis 
dorso spiculoso papillosis, nervo versus apicem denticulato, marginibus 
planiusculis ubique serrulatis, perichetialibus e basi erecta oblonga 
ultra medium uninervatis subulatis serrulatis recurvis, theca in pedun- 
culo breviusculo levi oblonga subzequali horizontali, operculo conico, 
peristomio interno processibus perforatis, ciliis singulis zequilongis, in 
membrana ad tertiam dentium longitudinis exserta, habitu H. myosu- 
roidis. 
Hab. British Columbia, Lyall and Douglas. ` 
In habit similar to H. myosuroides, but the ramuli more atte- 
nuated and more curved, and the whole plant a little larger. It 
appears to differ from H. stoloniferum in its more slender habit, 
more abundant papille on its branch leaves, reflexed margin of 
its cauline leaves, the more strongly one-nerved perichetial leaves, 
and single cilium between the processes of the internal peristome. 
H. AcuTicuspis, sp. nov. Foliis laxe imbricatis, infra perichetium late 
cordato-ovatis acumine angusto elongato marginibus tenuiter serru- 
latis apice cuspidis subleevi, nervo variante brevissimo, quasi disperso, 
furcato integrove medio evanido, cellulis ad angulos impressis infus- 
catis, ramulinis ovali-ellipticis acutis serrulatis ad medium nervatis 
dorso lzevibus, cellulis ad angulos fuscis, perichetialibus e basi oblonga 
enervia subulatis recurvis subintegerrimis, theca in pedunculo brevi- 
usculo ovali inclinata, operculo conico, peristomio interno processibus 
perforatis ciliis duobus brevioribus interpositis, habitu H. stoloniferi. 
Hab. British Columbia, Douglas. 
Two stems only have been seen of this apparently distinct 
species. In size it corresponds with H. stoloniferum; but its 
