— 276 — 



IS.D.ruber Juratzka. 



Leaves long acute or eubobtuse at apex, olten denticulate 

 near it. Inner perichetial leaves eubfiliform-subulate smooth 

 and not recurved; costa filling nearly the whole upper part of 

 .'icumen. Capsule straight; cells of the rostellate lid in straight 

 rows. Tufts reddish. Dioecious, very r. fruiting. — Alp. rocks r. 

 Eur. Austria: Breidler. Switzerl. fruiting; Philibert. 



b. Leaves short-acuminate or obtusate obliquely apiculate; 

 costa not excurrent. Plants not robust. 



HD.rubelluS Hoffmann. — Bryum Hoffm.; Did3'mod6n Br. 

 et Sch. 



Leaves from short ovate base sublinear-cultritorm, at apex 

 us. obtusate and entire or with few teeth. Perichetial leaves 

 nearly as long and similar. Capsule straight or indistinctly 

 curved; cells of lid as in the last. Us. synoecious. — Stone 

 and earth. Eur. common. Sweden etc.! Amer. not r. Can.: 

 Macoun; Waghorne. 

 IS.D.alpigenus Venturi. — • D. rubellus var. dentatus Schimper. 



Leaves as in the last but more distinctly acuminate acute 

 often dentate near apex. Perichetial leaves subsubulate narrower. 

 Ciipsule narrower; lid with obliquely seriate cells. Dioecious. 

 — ' Rocks in alp. regions r. Eur. Norway, Switzerl. I Amer. 

 »Greenl. »: . Lange. 

 1 6. D. canadensis Kindb. cat. can. ra. 



Differs from D. tuhellus: Capsule narrower. Perichetial leaves 

 short acuminate smooth not reflexed. Dioecious. — Rocks r. 

 Amer. Can.: Macoun; Waghorne. 

 17.D. subruber Kindb. revue bryoL 1896. 



Leaves as in D. rubellus but often dentate. Perichetial leaves 

 long-subulate not recurved. Capsule curved; lid rostrate. Dioe- 

 cious. — Rocks r. Amer. Can. Brit. Col.: Macoun. 

 IS.D.Baden-Powelli Kihdb. in Ottawa Natur. vol. V. 



Leaves as in D. rubellus but smaller shoi-ter often denticulate, 

 less twisted when dry. Perichetial leaves as in D. canadensis. 

 Capsule curved; lid short blunt very thick. Tufts very com- 

 pact, pale brown below. Dioecious; — Arctic distr. r. Amer. 

 Alaska: J. M. Macoun. 

 19.D.Debati Husnot revue bryol. 1895. 



Differs from other species of this section in leaves densely 

 serrulate above basal part. Leaves from narrowly oblong base 

 gradually tapering to a scarcely longer acumen, not or slightly 

 crisped when dry. Stem about 5 c, m. long. Capsules un- 



