— 199 — 
suleate. Tufts greenish and high. — Damp subalp. rocks r. 
Amer. Can. Brit. CoL: Macoun. 
49.D.algidum Kindb. revue bryol. 1896. 
Leaves entire nearly straight and suberect, only the upper 
flexuous, narrower than in JD. fuscescens; angular cells nearly 
uniform dilated; other cells very porose, gen. long; costa very 
narrow, nearly smooth at back or slightly rough in the exeur- 
rent part. Tufts soft and silky, green or dark green, nearly 
eradiculose, Capsules unknown. Habit of D. spadiceum; differs 
from it prine. in not convolute leaves. — Rocks in alps r. Amer, 
Can. Rocky mts 2700 metr. a. s.; Macoun. Eur, Sweden in 
- Lapland, and Norway: E. Nyman. 
 *D.subspadiceum Kindb. n. subsp. 
Leaves straight erect subconvolute, denticulate near apex and 
at the excurrent part of costa. Tufts brown with yellowish 
branch-tops. Capsules unknown. -— Rocks in alp. region r. 
Amer. Can. Rocky mts 2500 metr. a. s: Macoun. 
B. Perichetial leaves shorter than the awn. 
50.D.suleatum Kindb. bull. Torr. club XVII; D. trachyphyllum 
Ren. et Card. 
Leaves brittle not large, more or less flexuous when dry; 
cells porose, the uppermost short, the lower long; costa broader 
than in D. fuscescens, sometimes excurrent. Capsule sulcate. 
Habit of D. fuscescens. — Logs and rock& r. Amer. Can. Brit. 
CoL: J. and J. M. Macoun. N. Foundl: Waghorne. 
51.D.erispulum C. M. et Kindb. cat. Canad. m. 
Differs from the last: Leaves narrower, more crisped when 
. Wry; cells not porose, the uppermost irregular sometimes sub- 
oblong; costa very narrow gen. percurrent. — On earth or trees 
= mM woods r. Amer. Pacif. distr. Can. Brit. Col: J. Macoun: 
Alaska: J. M. Macoun: U, S.: Roell. 
. 52.D.perichetiale Kindb. in Hedwigia 1896 p. 61. 
Differs from the both last in the leaves larger and broader, 
neither crisped nor flexuous, only the uppermost subfaleate, 
often brittle; cells larger, narrow-linear, not or sparingly 
 Perose; costa distinctly denticulate at back, not excurrent, nar- 
Tower than in D. sulcatum; capsule larger. Resembles D. sco- 
Partum and D. majus in habit. — Amer. Pacif. distr. r. U. S.: Roell. 
6. Convolutifolia. 
A. Leaves serrulate in upper part of acumen. 
- a. Leaves long-subulate; costa somewhat long-excurrent. 
— Tufts tomentose; tomentum often reddish. 
