— 114 — 



but more or less distinctly denticulate at acumen, often recur- 

 ved to it; cells gen. sublinear except the few small in the angles 

 impressed alar; costa gen. vanishing near middle. Branch-leaves 

 ovate-oblong or ovate-lanceolate, long-acuminate often filiform- 

 pointed. Perichetial leaves sheathing nerveless, the inner den- 

 ticulate with long falcate acumen. Capsule oval-oblong or faintly 

 curved; cilia appendiculate; lid acute or apiculate; pedicel short.. 

 Stem creeping less often subpinnate. Tufts dense us. yellowish 

 brown and glossy. — Wet places princ. on siliceous rocks in 

 rivulets, common. Eur. Sweden, Nora^ay, German}', Switzerl.l 

 Amer. Can.: Macoun; Waghorne. U. S. Austin, com. Macoun. 

 26.B.seiniasperuni C. M. et. Kindb. — Eurhynchium oat. 

 Canad. m. 



Leaves nearly crowded decurrent nearly entire, from broad- 

 cordate base tapering to a narrow subulate acumen; upper and 

 middle cells sublinear, lower dilated; alar cells not defined; 

 costa vanishing near or above middle. Perichetial leaves sub- 

 oblong short-acuminate entire nerveless erect. Capsule small 

 suboval erect or inclined; teeth papillose above; segments shor- 

 ter than the high basal membrane; pedicel about 0,6 centim. 

 long. Tufts sparingly radiculose, loose and green. Branches 

 unilateral, gen. simple and short. Habit of the last. — Rocks 

 in brooks r. Amer. Can., Brit. Col.: Macoun. 



b. Leaves gen. long narrow long-acuminate. 

 27.B.popilleiini Hedwig. — Hypnum H.; Brachythecium Br. eur. 



Leaves gen. long and not broad, with long acumen and short 

 point, often entire at least below middle, recurved often to 

 acumen, crowded, not or slightly decurrent; lowest basal cells 

 short dilated, alar not defined; other cells BubUnear; costa rea- 

 ching to or in acumen, sometimes excurrent. Stem-leaves with 

 ovate or ovate-oblong base, more or less striate; branch-leaves 

 narrower. Perichetial leaves nearly nerveless, entire below the 

 long falcate acumen. Capsule suboval not large; teeth pale; 

 cilia r. appendiculate; lid acute or apiculate; pedicel sometimes 

 long. Tufts us. green often glossy. Stem sometimes subpin- 

 nate. Leaves sometimes small. — Rocks and trees princ. be- 

 low alp. regions. Eur. common. Sweden etc.! Amer. Can. 

 not r.: Macoun. 

 * B.nanopes C. M. et Kindb. cat. Canad. m. 



Leaves small narrow less recurved at base. Capsule smaller; 

 teeth pale orange; pedicel very short. Tufts brownish nearly 



