es ME LS 
Leaves brittle from subovate base contracted to a sublinear 
obtuse acumen, denticulate all around, distant but not decurrent; 
cells round-hexagonal except some oblong near the simple costa. 
Tufts loose blackish green when dry. — Rocks and trees r. 
Eur. Italy, Switzerl.! Amer. U. S.: Austin, com. Macoun; James, 
com. Boswell. 
5.H.frullaniopsis C. M. et Kindb. cat. Canad. m. 
Leaves not brittle, round-oval obtusate cochleariform, minu- 
tely denticulate above middle, decurrent; upper cells rhombic, 
lower oblong; costa more or less distinct, sometimes stout and 
simple. Tufts dark green. — Trees r. Amer. Can. N. Brunsw.: 
Moser, com. Macoun. 
43. Pseudoleskeella Kindb., new genus. 
A. Leaves distinctly denticulate. 
a. Leaves dimorphous; those of stem acuminate acute. 
l.P.heteroptera Bruch. — Pterogonium Bruch; Heterocladium 
Br. eur. 
Leaves opake very papillose, ovate-oblong serrulate all around, 
slightly recurved near base; cells gen. rotundate-quadrate. 
Stem-leaves gen. longer-acuminate; inner basal cells elongate; 
costa pellucid us. double. Branch-leaves subdistant often ob- 
tuse. Capsule small suboval sometimes erect; teeth pale, seg- 
ments rimose as high; cilia long; lid obliquely rostrate; pedicel 
short. Stem r. subpinnate; branches attenuate or acute, fasci- 
culate or distant, often flagellate. Dioecious very r. fruiting. 
-— Rocks r. Eur. Sweden, Switzerl.! Amer. Pacif. distr. Can.: 
Macoun; Drummond n. 219. U. S.: Roell, com. Cardot. 
2 P.vaneouveriensis Kindb.; Thuidium bull. Torr. club XVII; 
Heterocladium cat. Canad. m. 
Differs from the last: Leaves pellucid faintly papillose, below 
middle entire and often recurved; cells larger gen. more rotun- 
date or suboval; costa of stem-leaves simple opake. Capsule 
sometimes horizontal; lid conic acuminate. Stem subpinnate; 
branches short r. flagellate. Monoecious. — Rocks r. Amer. 
Pacif. distr. Can.: Macoun. U. S.: Roell, com. Cardot. 
3.P.dentieulata Sullivant. — Leskea Sull. ie. m.; Hypnum 
fabroniefolium C. M. syn. : 
Leaves pellucid faintly papillose minutely denticulate nearly 
all around; alar cells quadrate sometimes dilated, marginal 
rhombic, the others gen. suboblong; costa double very short 
or indistinct. Stem-leaves from round-ovate base abruptly E 
long-acuminate; branch-leaves subovate short-acuminate concave 
