150 JUNGERMANNIACEAE 
physes, brown trichomes of a similar structure sometimes occur- 
ring on other parts of the stem : perianth long-obovate, 2-3.5 mm. 
X 1.5-2 mm., now and then subplicate, ciliate-dentate at mouth: 
capsule ovoid-oblong, brown, seta 5-15 mm. in length ; spores 12- 
16 #, punctulate ; elaters contorted, 100-180 м X 7-104. 
On rocks and moist banks. Mt. Tamalpais (21, 4 and gem- 
miferous) ; Lake San Andreas (1192, с. fr.) San Mateo Со.; near 
Cazadero (1191, с. /ғ.), Sonoma Co.; Crescent City (Mr. Thomas 
Howell), Del Norte Co. A few slender gemmiferous plants from 
near Lake Lagunitas, Marin Co., appear to belong with this species 
also, though the dorsal lobes are commonly squarrose and the 
teeth are shorter and less numerous than is usual. 
The cuticle in the Californian specimens is for the most part 
distinctly granulate or verruculose, often as much so as in a speci- 
men of Scapania aspera Miller & Bernet * collected and deter- 
mined by Loitlesberger and in another collected and determined 
by Pearson, but we are unable as yet to distinguish Scapania aspera 
from S. nemorosa. А specimen collected by Loitlesberger in 
** Saminathal (Vorarlberg) 800 m." and named by him Scapania 
nemorosa has its leaf-cells more decidedly scabrous than has either 
of these specimens which have been referred to Scapania aspera. 
_3- ScaPANIA Одкези Aust. Bull. Torr. Bot. Club, 3: 10. 1872. 
Light-green, brownish, or fuscous-purple, caespitose: stems 
somewhat rigid, sparingly branched ascending, 1-2.5 cm. long: 
tral lobes : Marginal and median leaf-cells quadrate-oval, 15-24 4 
oblong-hexagonal near the base, 30-56 их 16-18 p, trigones ІП" 
conspicuous, cuticle plainly roughened: sometimes gemmiferous 
at stem-apex or on margins of the upper leaves, gemmae mostly 
à © о 
х 
Bernet, Cat. Hep. du Sud-Ouest de la Suisse et de la Haute-Savoie, 42. 1888. 
