181 
Type locality, Vancouver, Id. (Macoun). 
On decaying wood in moist places, Calif. (Bolander); Mt. Shasta 
and Graham's Ranch, Calif. (Howe); Colorado (Brandegee). 
The plant from Comox, Vancouver, Id. from which Kindberg 
evidently described the sporophyte is 4. asperrimum, hence some 
discrepancies in the description. The sterile specimens from Mt. 
Benson and Mt. Finlayson should be regarded as the type. I have 
described the sporophyte from one of the collections of Mr. M. A. 
Howe. This species has much the aspect of B. turgidum, but has 
dentate, shorter pointed leaves and rough seta. . It is distinguished 
from Z. rivulare by its much longer-pointed leaves. 
12a. BRACHYTHECIUM LAMPROCHRYSEUM GIGANTEUM n. Var. 
Stems much stouter, secondary stems with fewer branches; 
stem leaves distant, longer, 3—3.5 mm. long, very strongly plicate; 
extreme alar cells inflated. Capsule ovoid; operculum conic- 
rostrate ; annulus large, persistent; segments as long as teeth, 
from a very broad basal membrane; cilia 2 or 3, well developed, 
nodose; spores maturing in winter. Atku Id., Behring Sea. 
(U. S. S. Albatross, No. 44. June to, 1894.) 
I3. BRACHYTHECIUM RIVULARE Br. and Sch. Bryol. Eur. fasc. 52— 
54. pl. 546. 1853. 
Gametophyte very robust, in wide thick intricate mats, dark 
green to yellow-green; stems woody, filiform, creeping, rather 
sparingly radiculose; young stems distantly foliate with minute 
leaves, the older apparently leafless, irregularly divided, sending 
up dendroid secondary stems ; secondary stems stout, ascending- 
arcuate, 3—6 cm. long, nearly free from branches below, irregularly 
branching above; branches 5-15 mm. long, loosely terete-foliate, 
tapering ; branch leaves erect spreading, ovate to ovate-lanceolate, 
somewhat decurrent, 1.2—1.5 X 0.5—0.6 mm., acute to short acumi- 
nate, dentate above with small sharp pointed teeth, strongly con- 
cave or somewhat plicate; margins plain or slightly reflexed be- 
. low; costa extending 24 length of leaf; median cells linear, 10-15 : 
1; basal broader and shorter ; exteme alar cells abruptly enlarged ; 
leaves of secondary stems very characteristic, distant, broadly ovate, 
rather abruptly short acuminate, 1.6-2 X 1.1—1.4 mm., concave, 
more or less plicate, denticulate ; costa often forking ; median cells 
