" (141) 
lected on the island of Sachalin and in eastern Russia (751). 
fypnum ctrcinale Hook. Cajion City, Dyea Creek. In 
good fruit March 28, on trees. Common at Skagway on 
fallen logs. These specimens are dioicous with antheridial 
flowers more or less clustered on the stems. The annulus is 
simple, composed of pale cells slightly cohering. Median 
cells about .o04 by .0o55 mm. Alar cells forming an inflated 
cluster. Spores rough, up to .o16 mm. (752). 
Hypnum revolutum (Mitt.) Lindb. (AH. plicatile Mitt.) 
Lake Lindeman and Lake Marsh. Medium leaf-cells .005 
mm. wide and up to about .o4o mm. long, the majority of 
cells, however, up to .025 or .030 mm. long. Numerous short 
often nearly square alar cells with usually a few hyaline, 
somewhat enlarged cells in angles. In cufresszforme the 
median cells are about twice longer (757). 
flypnum cupressiforme brevisetum Schimp. Lake Marsh, 
on rock. The sterile specimens referred here possibly be- 
long elsewhere, yet they come very close to this variety, 
differing principally from the species in the leaves being 
straighter, rather shorter and with somewhat shorter leaf- 
cells (758). 
flypnum Vauchert Lesq. Dawson at base of tree. This 
species is dioicous. The leaves are entire, with flat borders. 
Cells in angles small, roundish or nearly square, extending 
up for a distance of 10 or 12 cells and in toward costa about 
the same amount. Median leaf-cells about .o04 by .030 to 
.040 mm. (755). 
flypnum Lindbergit elatum Schimp. Lake Lindeman, 
in swamps. ‘The specimens referred here have rather longer 
pointed leaves than the type with leaf-cells also longer and 
narrower, the median cells measuring about .004 by .o80 mm. 
The stem leaves are entire, flat bordered, not decurrent with 
a convex cluster of more or less inflated alar cells, either pale 
or colored. Stem sections oval, .280 mm. long, the outer 
row of cells thin-walled, the next 2 or 3 rows thick-walled, 
with central strand well developed, of 10 or 12 small cells 
(761). 
