— 207 — 



flexuous. Capsule very small, less distinctly strumose. — Higher 

 alp. region r. Eur. Switzerl.»: Schimper. 

 5.D.polaris Kindb. note on Canad. bryol. 1893. 



Differs from D. cerviculata: Plants smaller. Leaves shorter 

 nearly straight and not ilexuous; upper cells suboblong; costa 

 broader, filling the whole acumen. Capsule very small and 

 not striate, less distinctly strumose; teeth nearly entire or faintly 

 cleft. Stem verj' short. — Arctic distr. r. Ainer. Alaska: J. M. 

 Macoun. 

 6.D.cerviculatula Kindb. 1. c, 



Differs from D. cerviculata: Leaves gradually narrowed; cells 

 short quadrate, only the inner basal narrow; costa narrower 

 and well-defined, only in perichetial leaves distinctly excurrent. 

 Tufts dark green. — Amer. r. Can. Hudson Strait: R. Bell, 

 com. Macoun. 



in. Eu-Dicranella. 



A. Leaves channelled; costa long-excurrent. 



a. Leaves abruptly acuminate from the us. half-sheathing 

 base 



T.D.secunda Swartz. — Dicranum Sw. 1795; Dicranella Lind- 

 berg; D. subulata (Hedwig 1801) Schimper. 



Leaves entire with suboblong base, subfalcate not crisped; 

 lower cells narrow, the upper oblong; cosla gen. entire. Capsule 

 cernuous finally sulcate; teeth cleft to middle; lid long-rostrate; 

 annulus revoluble. — Wet stony ground princ. in alps. Eur. 

 not r. Sweden, Norway, Switzer).! Finl.: Brothe'rus. Amer. Can.: 

 J. Macoun. Alaska: J. M. Macoun. 

 * D.curvata Hedwig. — Dicranum H.; Dicranella Sch. 



Leaves with shorter base; costa denticulate above. Perichetial 

 leaves not convolute. Capsule us. erect. — Wet sandstone 

 rocks r. Eur. Germany: Huebner. France: Boulay, com. Hus- 

 not. Amer. »U. S.»: Lesq. et Jam. 

 S.D.crispa Ehrhart. — Dicranum Ehrh.; Dicranella Sch, 



Leaves entire with subovate base, crisped when dry; cells 

 gen. narrow; costa minutely denticulate near apex. Capsule 

 erect finally sulcate; teeth red-brown cleft to middle; lid long- 

 rostrate; annulus not wholly revoluble. — Sandy ground. Eur. 

 not r. Norway, Sweden! Engl.: Holt. Amer. Can.: Macoun. 

 9.D.parTnla Kindb. bull. Torr. club 1889. 



Leaves crenulate all around with subovate base, crisped or 

 curved when dry; basal cells long linear, upper oblong-quadrate; 

 costa denticulate above. Capsule inclined or suberect; teeth 



