— 263 .— 
72.B.acuta Bridel. — Tortula Brid. 1806; Barbula Brid. 1819; 
Tortula gracilis Schleicher 1807; Barbula Schwægrichen. 
Leaves ovate-oblong entire, reflexed below and strongly re- 
curved near base, patent or twisted when dry; cells short; costa 
gen. short-excurrent or percurrent. Perichetial leaves suboblong 
with subulate acumen; costa long-excurrent. Capsule oval- 
oblong; annulus indistinct. Tufts olivaceous or green. — On 
earth r. Eur. Switzerl.! Austria: C. E. Kindberg. France: 
Berthoumieu. Amer. Can.: Macoun. 
* B.abbreviatifolia H. Mueller. 
Leaves appressed when dry; costa often longer excurrent. — 
Wet alp. rocks, sometimes in running water, r. Eur. Norway! 
18.B.viridis Schimper. 
Leaves longer than in B. acuta, narrowly ovate-lanceolate 
 8ubulate-acuminate serrulate or denticulate above, reflexed below, 
crisped; basal cells short-rectangular; costa somewhat long-ex- 
current. Perichetial leaves as in the last. Capsule cylindric 
sometimes curved; annulus revoluble. Tufts green, — Rocks 
in warmer districts r. Eur. Switzerl. near Lugano! Belgium: 
Gravet. (Asia, Syria: A. H. Brotherus.) 
14.B.artocarpa Lesquereux. l 
Differs from B. acuta: Upper leaves ovate-lanceolate subulate; 
basal cells rectangular; costa more distinctly excurrent. Cap- 
sule subcylindric. — On earth in higher alp. regions r. Amer. 
U. S. Oregon mt Hood 8300 metr. a. sea: Roell. T 
b. Leaves faintly papillose straight when moist. | Peristome 
twice contorted; annulus distinct. 
75.B.iemadophila Schimper; Braithwaite. 
Leaves narrowly ovate-lanceolate reflexed below but not 
strongly recurved, longer acuminate than in B. acuta, appressed 
when dry; lower basal cells short-rectangular; costa long-excur- 
rent. Tufts olivaceous or dark green. Capsule oval-oblong. 
Very r. fruiting. — Wet alp. rocks r. Eur. France: Thériot, 
com. Husnot. (Asia, Caucase: V. F. Brotherus). 
€. Leaves faintly papillose or nearly smooth, curved when 
moist; lower basal cells pellucid rectangular. : UT 
aa. Costa of leaves subpereurrent, in the inner perichetial 
long-excurrent, Peristome pale contorted. l 
76.B.pseudo-rigidula Kindb. cat. Can. m. 
Leaves from short ovate base long-acuminate, reflexed below, 
twisted. when dry; costa brown. Inner perichetial leaves from 
oblong base narrowly acuminate. Capsule brown subcylindric. 
