(126) 
Median leaf-cells mostly hexagonal, 2 to 4 times longer than 
wide, up to .o7o mm. long. Cell walls rather thick, scarcely 
pitted or sometimes distinctly so both above and _ below. 
Capsule with lid up to 5.5 mm. long. Sporangium not con- 
tracted below mouth, mostly somewhat gradually narrowed 
to collum and about equalling it in length. Lid low-convex, 
not mamillate. Annulus of 3 or 4 rows of cells. Exostome 
pale golden-yellow below with dorsal plates near base 3 to 4 
times wider than high and 26 to 28 lamellae on ventral side 
not joined by cross walls. Endostome free, with basal mem- 
brane extending 4 up, segments broadly pointed with 8 to 10 
narrow perforations, well developed cilia broad, solitary, 2 
or 3 rows of cells wide, with apex sometimes slightly split or 
shorter and imperfect. About three rows of transversely 
elongated cells about mouth of capsule, the cells toward 
middle becoming rectangular (3 or 4 to 1) and near base 
short and irregular with oblong stomata about .o40 mm. 
long. Spores smooth, up to.o24 mm. (Plate 18.) 
On rocky hillside between Cafion City and Sheep Camp, 
on Dyea Creek, March 28, 1898. This plant comes nearest 
uliginosum, 1 believe, but differs in the more pointed leaf 
with more distinct and revolute border, pitted leaf-cells, 
blunt lid, more developed inner peristome and dioicous in- 
florescence (578). 
This plant was wholly unnamed by M. Philibert, and I 
should have been greatly pleased to have given his name to 
the species, but it does not seem to be available in this con- 
nection. 
Bryum cuspidatum Schimp. Dawson. This species has 
the costa excurrent into a sharp, denticulate point 4 or 5 cells 
in length, a revolute margin of narrow cells, dorsal plates of 
exostome 2 or 3 times wider than high, 25 or more lamellae 
on ventral surface and smooth spores up to .or4 mm. (586). 
Bryum caespiticium L. Marsh Lake. In good fruit June 
10 (658). 
Bryum Duvalit Voit. Sterile specimens collected at the 
head of Lake Bennett (652). 
Bryumventricosum Dicks. (B. pseudotriguetrum (Hedw.) 
Schwaegr.) Skagway. In fine fruit August 27, on wet 
rock (807). 
