— 191 — 
18.D.asperulum Mitten. — D. virginicum Austin; Dicranodon- 
tium aristatum Schimper; D. Millspaughi Britton. 
Leaves and stem brittle. Leaves narrower than in the last, 
less gradually tapering to the also in lower part serrulate acu- 
men, less flexuous or nearly straight when dry; lower cells 
(above the alar) dilated nearly uniform. Tufts us. pale brown, 
very soft and silky-like. Very r. fruiting. — Rocks r. Eur. 
Austria: A. Schmidt. Norway: Wulfsberg, com. P. Olsson. Amer. 
U. S.: com. Cardot. 
VII. Eu-Dicranum. 
1. Falcatiformia. 
A. Capsule suleate when dry. 
19.D.Starkei Weber et Mohr. — Oncophorus suecicus Arnell 
et Jensen. 
Leaves flexuous; alar cells well-defined; uppermost cells short, 
the others long or short. Capsule sometimes suberect and less 
distinctly strumose. Perichetial leaves subovate us. long-aristate. 
Tufts us. green. — Rocks princ. in alps not r. Eur. Norway, 
Spain, Switzerl.! Sweden: R. Hartman; Arnell. France: Boulay, 
com. Husnot. Amer. Can.: Macoun. U. S.: Roell. 
B. Capsule not sulcate. 
a. Leaves distinctly falcate also when dry. 
20.D.faleatum Hedwig. 
Alar leaf-cells not well-defined; other cells gen. long, the 
uppermost short-rectangular. Perichetial leaves subovate often 
long-aristate. Tufts often blackish. — Alp. rocks r. Eur. Nor- 
way, Switzerl.! France: Husnot. Scotl.: Rogers. Amer. »U.S.»: 
Lesq. et Jam. 
_. b. Leaves flexuous not falcate. : 
21 D.schisti Gunner. — Bryum Gunn.; Dicranum Lindberg; 
D. Blyttii Schimper. 
Leaves entire; alar leaf-cells well-defined, the others short at 
least the uppermost. Capsule distinctly necked or strumose, 
Perichetial leaves oblong short-aristate. Tufts us. blackish 
below. — Rocks princ. in alps and northern districts. Eur. 
not r. Sweden (also below alps), Norway! Scotl.: Rogers. Spets- 
bergen: Berggren. Portugal: Levier. Amer. r. Can.: Macoun. 
. Greenl: Berggren. : 
22.D.pumilum Sauter. — Aongstroemia Sauteri C. M. 
Leaves sometimes slightly denticulate; cells gen. short, the 
alar not much distinct; costa sometimes percurrent. Pedicel of 
the indistinctly necked capsule short. Perichetial leaves long- 
