— 276 — 
13.D.ruber Juratzka. oai o dnd 
Leaves long acute or subobtuse at apex, often denticulate 
near it. Inner perichetial leaves subfiliform-subulate smooth 
and not recurved; costa filling nearly the whole upper part of 
acumen. Capsule straight; cells of the rostellate lid in straight 
rows. Tufts reddish. Dioecious, very r. fruiting. — Alp. rocksr. — 
Eùr. Austria: Breidler. Switzerl. fruiting: Philibert. cf 
b. Leaves short-acuminate or obtusate obliquely apiculate; 
costa not excurrent. Plants not robust. 
14.D.rubellus Hoffmann. — Bryum Hoffm.; Didymodon Br. 
et Sch. 
Leaves from short ovate base sublinear-cultriform, 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. 
15.D.alpigenus Venturi. — D. rubellus var. dentatus Sehimper. — 
Leaves as in the last but more distinctly acuminate acute — 
often: dentate: near apex. Perichetial leaves subsubulate narrower. 
Capsule narrower; lid with obliquely seriate cells.  Dioecious. - 
— Rocks in alp; regions r. Eur. Norway, Switzerl.| Amer. - 
»Greenl.»:. Lange. 
16.D.canadensis Kindb. cat. can. m. Ens 
Differs from D. rubellus: Capsule narrower. Perichetial leaves 
short acuminate smooth not reflexed. Dioecious. — Rocks r. 
Amer. Can: Macoun; Waghorne. i 
17.D. subruber Kindb. revue bryol. 1896. pire 
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. : 
18.D.Baden-Powelli Kindb, in Ottawa Nstürz:vol: VA wm 
- Leaves as in D. rubellus but smaller shorter often dentieulate, 
less twisted when dry. Perichetial leavés as in D. canadensis. 
Capsule: curved; lid short blunt very thick. Tufts very com- 
pact, pale brown: below. -Dioecious. — Arctic distr. f. Amer. 
Alaska: J..M.' Macoun. - 
19.D.Debati Husnot revue bryol. 1895. bia 
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 um - 
ii 
