162 JUNGERMANNIACEAE 
I. PoRELLA ВОГАХРЕК! (Aust.) Pearson, List. Can. Hep. 7. 1890. 
[ Excluding specimens cited (?)] 
Madotheca Bolanderi Aust. Bull. Torr. Bot. Club, 3: 14. 1872. 
twisted, long-decurrent, nearly discrete, .4-1 mm. х.08-.4 mm., 
about У; as wide as the underleaves, length 2—2 the width of the 
dorsal, undulate-repand above, sparingly caudate-lacinulate on in- 
late to oblong, a little wider than the stem, apex obtuse, subacute, 
rarely emarginate or slightly cleft, often deflexed, margins plane 
or recurved, undulate-repand, long-decurrent, the wings with com- 
monly 2 or 3 cauda-like laciniae on either side toward the base: 
dioicous: 2 spikes oblong to almost linear, 2-4 mm. in length: 9 
branch short ; dorsal lobes of 9 bracts subobtuse or acute, the ven- 
tral acute or often 
denticulate above 
-plicate dorsally, often furnished ventrally with 2 
y winged carinae, narrowed at the ciliate, subtruncate, 
deeply bilabiate mouth - bere 
about its own len : capsule oval or oval-oblong, exserte 
180-310 их 10—12 №, 2- (3-) spiral. 
Exsicc. Hep, Am, 31. 
On stones, under shelving rocks, and on the bark of living 
oa especially of Quercus agrifolia. 
irst collected by Dr. Bolander. Berkeley (7, 1189, оч 
1197), Fruit Vale (1219), San Leandro (Underwood) ; Mitchell 
gth ; spores 29-40 и, minutely echinulate ; elaters 
