666 DRUMMOND’S NORTH AMERICAN MOSSES, 
46. Pterogonium imbricatum var. larum, differs in no 
essential point from No. 75. 
71. Pterogonium filiforme Hedw. A is the true plant, B 
is Pt. repens. i 
80. Dicranum scoparium, A is Dicr. majus var. minor, foliis 
brevioribus : and B is Dicr. Schraderi var. foliis augustioribus 
subrugosis. 
87. Dicranum strictum Schwegr, is D. flagellare Hedw. 
84. Dicranum Starkii var. majus, is D. longirostre 
Schweer. 
86. Dicranum undulatum var., is without any doubt a 
peculiar and distinct species: the capsules are, however, not 
in a sufficiently good state to permit of any decision with 
ps 
. Dicranum | elongatum var. minus, is D. strictum 
ER. 
97. Dicranum Schreberianum, is D. Grevillésmari Hook. 
100. Dicranum julaceum, is a remarkable and beautiful 
species, belonging, however, to the genus Weissia. 
102. Dicranum Scottianum, is D. montanum Hedw. 
104. Dicranum Richardi, is the same variety of D. virens, 
which Bridel calls Oncophorus Wahlenbergii. 
105. Dicranwn microcarpum, is D. virens var. gracilescens, 
foliis angustioribus, capsulis minoribus, and strongly resem- - 
bles Funk’s D. virens var. compactum. 
109. Dicranum latifolium, is Desmatodon latifolius var. 
B. glacialis. 
114. Didymodon oblongifolius, is Desmatodon flavicans 
Bryol Europ. and the same broad-leaved form which 
Schweeg. has described and figured (Suppl. I.) as Barbula - 
obtusifolia. In the Alps this species is smaller. 
115. Didymodon latifolius, is Desmatodon cernuus Bryol. 
Europ. 
127. Didymodon fragile nov. sp., appears to be a Trichos- 
tomum; the specimens are, however, too imperfect to enable — 
us to determine either genus or species. 
132. Trichostomum fasciculare, is a very different plant 
