-— 197 — 
acumen, their upper cells suboblong, less porose; costa more 
abbreviate, nearly smooth at back. — Amer. Pacif. distr. re 
Can. Vane. isl.: J. Roell. 
Var. Schlotthaueri Barnes. 
Leaves shorter, broadér-acuminate, their upper cells gen. sub» 
Oval costa not bilamellate. Habit of D. brachycaulon. — 
Amer. r. U. S Yellowstone Park 2100 metr. a. &: Roell. 
43.D.subpalustre C. M. et Kindb. |, c. 
Leaves serrulate in the greater part of the somewhat long 
narrow (sometimes brittle) acumen, very concave below, sub- 
convolute at base of acumen, sometimes short-decurrent, not 
spreading, sometimes undulate when dry; cells as in D. scopa- 
rium; costa percurrent, serrulate in upper part but not lamellate. 
Perichetial leaves long-aristate. Capsule nearly smooth or finally 
sulcate. Tufts often yellowish. — Bogs r. Amer. Can.: J. and 
J. M. Macoun. U. $S.: Roell. Eur. Sweden in Lapland: E. 
Nyman. : : 
44.D.hyalinum Kindb. in Hedwigia 1896, p. 61. 
Leaves faintly dentieulate near apex, narrower and somewhat 
long-acuminate; alar cells nearly hyaline rectangular not well- 
defined; other cells hyaline not porose, narrow-linear except the 
oval apical; costa faintly dentieulate near apex, narrow above 
but very dilated at base, not excurrent. Tufts loose very ‘spa- 
tingly radiculose. Capsules unknown. -- Alp. region r. Amer. 
U. S. Nat. Park 2100 metr. a. £.: Roell. 
5. Fuscescentiformia. 
“A. Inner perichetial leaves longer than the awn. 
. .& Leaves very long and not crisped but faleate or nearly 
Straight when dry, sometimes brittle; costa very narrow. Cap- 
Sule large; pedicel very long. Tufts shining very high. 
. $5.D.majus Smith. 
Leaves with subulate nearly wholly serrulate acumen; angular 
 9ells diversiform, the inner hyaline; other cells long uniform 
 Dorose; costa excurrent rough at least in upper half. Capsules 
faintly striate us. clustered. Inner perichetial leaves denticulate, 
truncate below the awn. Tufts green or yellowish. — On. 
_ farth and shaded rocks in woods. Eur. not r. Sweden common! 
| - r. Can. eastern districts: J. Macoun: U. S.: Roell. Alaska: 
.. 9-:M. Macoun. 138 * 
 36.D.Howellii Renauld et Cardot bot. gaz. 1889. — D. an- 
 Eüstifolium Kindb. bull. Torr. club XVII, 1890 (in part). —— 
_ Leaves with sublinear in upper half serrulate acumen, narrower 
