206 
recurved on both sides to the acumen ; lower basal and alar cells 
small, green and not well defined ; lid of the capsule longer apicu- 
late or rostellate." 
* Amer. Canada: White, com. Macoun.” 
37. BRACHYTHECIUM CALCAREUM Kindb. l. c. 
* Resembles B. intricatum (Hypnum Hedw., Brachythecium 
velutinum (var.) Schimper) in the habit; differs from B. laetum 
(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, denticu- 
late 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 hya- 
line.  Stem-leaves with a broad base; costa short, mostly vanish- 
ing near the middle. Branch leaves narrow ; costa nearly reaching 
to the acumen. Capsule small, arcuate; cilia not appendiculate ; 
lid apiculate ; pedicel smooth, about 1 centim. long. Tufts dense 
and radiculose, green and faintly glossy. Stem irregularly divided ; 
branches not compressed ; monoicous.”’ 
* Limestone rocks, Canada, Ottawa; 1892, Macoun." 
38. BRacHYTHECIUM FrrzGERALDI (C. Muell.) Ren. & Card. Rev. 
BryoL 20: 17.. 1903: 
Hypnum (Brachythecium, Cavernularia) Fitzgeraldi C. Muell. 
Flora, 70: 224. 1887. : 
** Dioicous ; tufts low, pulvinate, broad, yellow, loosely inter- 
woven: stem with branches short, more or less parallel, slender, 
round-julaceous ; branchlets very short, rather spreading, single : 
stem leaves closely appressed, when moist scarcely spreading with 
cordate base semi-circularly impressed, rather broad ovate, short- 
acuminate ; more or less ventricose-concave on both sides of the 
narrow vanishing deeply canaliculate green costa; margin nearly 
plane, everywhere slightly denticulate; cells very narrow, long, 
pale yellow ; alar cells many, small, hexagonal; fruit unknown." 
Type locality, Florida. Collected by Fitzgerald. Specimens: 
not seen. 
