— 894 — 
7.A.Maeounii Kindb. bull. Torr. club 1890. 
Leaves from short ovate or broadly ovate-lanceolate base 
abruptly narrowed to the sublinear acumen, papillose princ. on 
upper part of costa, whick is purple red gen. long-excurrent 
but not filing whole acumen below. Tufts brown or brown- 
red when dry. Capsules unknown. — On inclined faces of 
rocks by rivulets in higher alp. region r. Amer. Can. Brit. Col. 
2250 metr. a. sea: J. Macoun. U. S. Oregon: Roell. 
B. Leaves smooth on lamina, papillose on the long-excur- 
rent costa, crowded, slightly crisped. Tufts low dense. 
8.A.Blyttii Schimper. y 
Leaves from short ovate base abruptly narrowed to the ex- 
current costa. Tufts us. blackish when dry. — Northern alps 
r. Eur. Norway: M. N. Blytt; Zetterstedt. Amer. Greenl.: Berg- 
gren, com. Nathorst. ` 
3. Rupestres. 
A. Leaves with not or slightly excurrent costa; the inner 
perichetial with percurrent costa. 
9.A-Rothii Weber et Mohr. 
Leaves crowded us. ovate-lanceolate broadly acuminate sub- 
acute and not falcate. Tufts low dense blackish or red-brown. 
— Siliceous rocks. Eur. not r. Norway! Swedenl; R. Hartman. 
France: Husnot. Amer. r. »U. 8.»: Lesq. et Jam. 
* A.faleata Schimper. i 
Leaves falcate smaller, from ovate-oblong base abruptly nar- 
rowed to the subulate acumen. Tufts us. blackish. — Alp. 
rocks r. Eur. Spain, Switzerl! France: Husnot. Amer. Can.: 
Macoun. | ha 
B. Leaves gen. with long-excurrent costa: inner perichetial 
nerveless, | We 
a. Leaves short ovate or ovate-oblong crowded often sub: - 
erect when dry: perichetial us. smooth, 
10.A.erassinervis Bruch. i 
Leaves subovate; costa thick terete long-excurrent. In 
perichetial leaves long-acuminate, outer costate. Tufts dense —— . 
blackish. — Rocks princ. below alps near sea. Eur. Sweden 
less r.l; M. Huss. Norway: E. Nyman. Finl.: Axel Arrhenius. | 
Amer. r. N. Foundl.: Waghorne. 
li.A.obtusifolia Berggren in sched. nm 
Leaves ovate-oblong; costa faint applanate exeurrent not fil- 
ling. whole acumen below. Nearly all perichetial leaves nerve- 
less: inner obtusate or short-acuminate. Tufts loose blackish. 
