— 160 — 



a. Leaves distinctly bordered by the wings of lamina, acu- 

 minate, gen. long and not strongly appressed when dry. 

 lO.P.aipinum L, — Pogonatum Roehling. 



Leaves dentate nearly to the sheath, very patent when moi- 

 stened; awn short rough reddish also in perichetial leaves, 

 which in upper part are furnished with few lamellae. Capsule 

 us. oblong (r. subcylindric) and not or slightly oblique; lid gen. 

 long-rostrate. Stem us. branched above. — Stony and grassy 

 places on mountains princ. in alps. Eur. common in alps. 

 Norway, Switzerl.! Amer. Greenl.: Berggren. Alaska: J. M. Ma- 

 coun; Palmer. Can.: J. Macoun. U. S.: Roell. — A var. with 

 subcyUndric capsule is found in Can. Northern Labrador by 

 J. Macoun 1896. 

 * P.brevifolinm R. Brown. 



Leaves very short, appressed when dry. Capsule globose. — 

 In higher alp. region r. Eur. Norwayl Sweden: E. Nyman. 

 Amer. » Greenl.: Vahl»: Lange. 



ll.P.microdoiitmm Kindb. in Biblioth. botan. 42 (1897). — 

 Pogonatum alpinum var. microdontium Kindb. cat. Canad. m. 



Leaves entire or minutely denticulate only in upper third or 

 half of lamina, longer-subulate than in P. alpinum; uppermost 

 leaves very long, suddenly larger and spreading; awn reddish 

 somewhat long, faintly rough. Perichetial leaves with very 

 long nearly smooth awn; lamellje somewhat numerous. Capsule 

 large thick globose or broad-oval, often oblique; lid short-api- 

 culate. Stem gen. simple. — Alpine princ. arctic districts r. 

 Amer. Greenl.: Vanhoeiien. Alaska: J. M. Macoun; Palmer. 

 Can. Brit. Col.: J. M. Macoun. 

 12.P.Vaiilioeffeili Kindb. in BibUoth. botan. 42 (1897). 



Leaves entire or only near apex (scarcely in upper third of 

 lamina) dentate, not long but long-acuminate, very narrowly 

 bordered by lamina, nearly appressed when dry, not much 

 open when moist; awn short rough red-yellow. Perichetial 

 leaves much narrower with not few lamellse. Capsule obovate 

 oblique; lid scarcely shorter than half capsule. Stem us. spa- 

 ringly divided above, often to 8 c. m. high; pedicel scarcely 

 3 cm. Tufts brownish. — Amer. r. Greenl.: E. Vanhoefien. 



b. Leaves bordered by wings of lamina only near apex, 

 short acute but gen. obtusate, appressed when dry. 

 IS.P.septemtrionale Swartz; Wahlenberg fi. lappon., not C. 

 M. syn.; Kindb. revue bryol. 1894. 



Leaves entire or with very few teeth near apex; awn very 



