86 REVUE BRYOLOGIQUE 
middle, stronger serrulate at the base, long-decurrent , 
broadly recurved only near the base ; cells linear, except 
the very numerous hyaline alar ones; costa reaching to 
the acumen. Branch-leaves subtriangular or ovate-oblong, 
acute, sometimes short-acuminate, recurved all around, 
minutely denticulate but near the apex serraie ; apical 
cells oblong. Capsules not found. Stem pinnate , creeping ; 
branchlets short, curved and densely crowded, brown- 
yellowish and golden glossy. 
Amer. Unit. St. ; California (1882) : Mrs L. C. Feely. 
93. Brachythecium cavernosum Kindb. n. sp. 
- Differs from B. rutabulum: Leaves very Concave, 
plicate, recurved on both sides to the acumen ; lower basal 
and alar cells small, green and not well-defined ; lid of the 
capsule longer apiculate or rostellaie. 
Amer. Canada: White, com. Macoun. 
24. Brachythecium calcareum Kindb. n. sp. 
Resembles B. intricalum ( Hypnum Hedw., Brachythe- 
cium velutinum (var.) Schimper) in the habit; differs 
from it in the plicate leaves ; differs from B. /ætum (Brid.) 
Kindb. (non Schimp.), not occurring in Europe, in the 
entire stem-leaves, the larger alar cells and the shorter 
costa ; from B. salebrosum also in the leaves curved or 
secund in dry state. 
Leaves crowded, long-acuminate and filiform-pointed, 
denticulate at the acumen or (the stem-leaves) nearly 
entire, more or less recurved, incurved-falcate when dry, 
patent when moist ; cells linear, the angular short, the alar 
ones few, much larger and hyaline. Stem-leaves with à 
broad base ; costa short, mostly vanishing near the middle. 
Branch-leaves narrow ; costa nearly reaching to the 
acumen. Capsule small, arcuate ; cilia not appendiculate; 
lid apiculate ; pedicel smooth, about 4 centim. long. Tufts 
dense and radiculose , green and faintly glossy. Stem 
irregularly divided ; branches not compressed. Monoecious. 
Limestone rocks. Amer, Canada, Ottawa (1892) : Macoun. 
25. Brachythecium subintricaltum Kindb. n. Sp- 
Differs from B. velutinum and B. intricatum : Tufts 
loose, sparingly radiculose, dusky green; alar leaf-cells 
often dilated ; leaves faintly denticulate, filiform-pointed ; 
the perichetial ones nearly entire, with a long and filiform, 
deflexed point ; capsule oblong-cylindric and arcuale ; 
branches somewbat compressed. 
Leaves nearly erowded (at least those of the stem), 
decurrent, nearly uniform (those of the branches not much 
narrower), narrowly ovate-oblong or ovate-lanceolate, not 
_falcate when dry; cells linear, the alar ones few; costa … 
vanishing above the middle. Pedicel of the capsule very 
