— 192 — 
aristate. Tufts blackish about 0,5 e. m. high or lower. Much 
smaller than the last. — Hur. »Austria: Sauter»; C. M. Amer. 
Can. Labrador: Waghorne. U. S.: Roell. io des 
2. Molliformia. 
23.D.molle Wilson. — D. arcticum Schimper. : OM 
Leaf-cells long except the well-defined alar. Capsule not 
sulcate; pedicel- often long. ~ Perichetial leaves long-aristate. 
Tufts dark or yellowish brown. Habit of D. spadiceum. sR. 
fruiting. — Wet earth often near rivulets, in higher northern - 
alp. region, r. Eur, Norway! Sweden: C. Indebetou. Scotl: Lc 
Rogers. Spetsbergen: Berggren, com. A. G. Nathorst. Amer. — 
Alaska: Palmer; J. M. Macoun. Greenl.: Berggren: k- 
[oer 3. Carinatifolia. id 
A. Costa of leaves strongly serrate at back. Upper leaf- 
cells often long. Em 
à. Capsules sulcate us. clustered 3—4 together. Leaves de- : 
current more or less distinctly undulate when dry. 2i 
24.D.undulatum Ehrhart. AE 
Leaves very distinctly undulate also when moist, strongly 
serrate above middle, recurved at one side near base, us. long- 
subulate, often nearly straight and spreading when dry; angu- 
lar cells diversiform, the alàr brown dilated; other cells long 
and porose; costa with serrate ridges at back. Inner periche- 
tial leaves nerveless. Tufts green, — On ground in woods — 
Eur. gen. common (in Great Britain r.) Sweden, Switzerll 
Amer. common. Can.: Macoun. mor. 
* D.ontariense Kindb. n. subsp. ju 
Leaves less spreading, not recurved, strongly serrate only in 
upper part of acumen. Capsule solitary. — Amer. Can. r. 
Macoun. = 
25.D.Drummondii C. Mueller. : 
Leaves tapering to à long sublinear in upper part serrate 
acumen, not recurved, flexuous or crisped when dry, often 1n- 
distinctly undulate; cells very chlorophyllose not porose: lower 
angular. yellow, alar uniform dilated us. hyaline, other lower 
basal long, the others short irregular but the apical often long. 
Tufts green or yellowish. — Damp: woods and peat-bogs. Amer. 
not r. Can.: Macoun; Roell. pois 
b. Capsules solitary r, in pairs. Leaves not decurrent 
undulate. 
26.D.canadense Kindb. bull. Torr. club XVIIL qid 
Leaves narrowed to a long subulate in upper half strongly. 
