— 192 — 



aristate. Tufts Wackish about 0,5 c. m. high or lower. Much 

 smaller than the last. — Eur. »Austria: Sauter^: C. M. Amei'. 

 Can. Labrador; Waghorne. U. S.: Roell. 



2. Molliformia. 

 23.D.moUe Wilson. — D. arcticum Schimper. 



Leaf-cells long except the well-defined alar. Capsule not 

 Bulcate; pedicel often long. Perichetial leaves long-aristate. 

 Tufts dark or yellowish brown. Habit of D. spadiceum. R. 

 fruiting. — Wet earth often near rivulets, in higher northern 

 alp. region, r. Eur, Norwayl Sweden: C. Indebetou. Scotl.: T. 

 Rogers. Spetsbergen: Berggren, com.. A. G. Nathorst. Amer. 

 Alaska: Palmer; J. M, Macoun. Greenl.: Berggren. 



3. Carinatifolia. 



A. Costa of leaves strongly serrate at back. Upper leaf- 

 cells often long. 



a. Capsules sulcate us. clustered 3 — 4 together. Leaves de- 

 current more or less distinctly undulate when dry. 

 24.D.undalatiiin Ehrhart. 



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 alar 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, Switzerl.I 

 Amer. common. Can.: Macoun. 

 * D.ontariense Kindb. n. subsp. 



Leaves less spreading, not recurved, strongly serrate only in 

 upper part of acumen. Capsule solitary. — Amer. Can. r.: 

 Macoun. 

 25.D.Drumraondii C. Mueller. 



Leaves tapering to a long sublinear in upper part serrate 

 acumen, not recurved, flexuous or crisped when dry, often in- 

 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. 



b. Capsules solitary r. in pairs. Leaves not decurrent r. 

 undulate. 



26.D.canadense Kindb. buU. Torr. club XVII. 



Leaves narrowed to a long subulate in upper half strongly 



