167 
strongly serrate, apex often twisted; stem leaves very broadly 
triangular-ovate approaching in outline those of B. Starkei, about 
2 X 1.2 mm., very slenderly acuminate, slightly serrulate. Sporo- 
phyte with cilia often 3. Capsule much like that of B. orycladon. 
New Brunswick (Fowler); Weehawken, N. J., and Oneida, 
N. Y. (Austin). B. salebrosum flaccidum is the extreme broad- 
leaved form of the species and may be distinct, but at present our 
knowledge is insufficient to define it. 
2. BRACHYTHECIUM FLEXICAULE R. & C. n. sp. 
Gametophyte in wide loosely intricate mats, yellow-green, often 
brown underneath ; stems creeping, densely radiculose, closely 
applied to the substratum, 5—12 cm. long, pinnately branching ; 
branches 5-10 mm. long, terete-foliate, ascending, attenuate ; 
branch leaves narrowly lanceolate, 2-2.5 X 0.5-0.65 mm., 
gradually narrowed to a very long slender apex, serrate, concave 
or bisulcate; margins somewhat reflexed ; costa extending %4-% 
length of leaf ; median cells linear-vermicular, 12—14:1 ; basal cells 
broader and shorter; extreme alar cells subquadrate : monoicous. 
Sporophyte usually not to be distinguished from that of B. sale- 
brosum ; capsule sometimes approaching that of B. oxycladon, 
3—4:1. 
Type locality, John's Beach, Newfoundland (Waghorne) ; on 
earth, Revelstoke, B. C. (Macoun, sent out as P. g/areosum) ; on 
schistose rocks, Manchester, Vt. (A. J. G.); New Jersey (Austin) ; 
on decaying wood, Bradford, Pa. (Burnett); Adirondacks (Mrs. 
Annie M. Smith) 
Type seen. 
This species seems to me to be almost identical with B. sale- 
brosum densum Br. & Sch. Bryol. Eur. AM. 550, but M. Cardot 
thinks otherwise. It is easily distinguished from all its near allies 
by the extremely narrow stem leaves, gradually narrowed from 
just above the base to the apex. 
3 — ex CAMPESTRE Br. & Sch. Bryol Eur. fasc. 
52-54. M. 11. 1853. 
Hypnum rutabulum campestre C. Muell. Syn. 2: 368. 1851. 
Brachythecium subalbicans De Not. Cronaca, 2: 20. 1867. 
Epil. 118. 1868. 
