— 895 — 
— Dry siliceous rocks in arctie distr. r. Amer. Greenl.: Berg- 
gren, com. Nathorst: i a 
b. Leaves gen. ovate-lanceolate patent also when dry. 
aa. Leaves somewhat distant: inner perichetial very papillose. 
12.A.Huntii Limpricht. 
Leaves falcate; costa not filling whole acumen below. Tufts 
dense blackish. — Rocks princ. in lower districts r. Eur. Swe- 
den: C. Indebetou. Norway: E. Nyman. Engl: Holt. Portugal: 
Levier. Amer. Can. Vanc. isl: Macoun. 
bb. Leaves crowded; the perichetial smooth. 
13.A.frigida Huebener. 
Leaves broadly acuminate subobtuse; outer perichetial costate. 
Tufts dense reddish brown or blackish. — Siliceous alp. rocks. 
Eur. not r. Spain! Portugal and Corsica: Levier. Germany: 
Limpricht. Austria: Breidler. 
14.A.angustata Lindberg. 
Leaves narrowly long-acuminate subacute: perichetial nerveless. 
Tufts loose blackish very low. — 1n alp. region r. Eur. »Austria 
1600 metr. a. sea: Breidler»: Limpricht. 
Fam. 35. Bruchiacee. 
160. Bruchia Schwegrichen. 
A. Calyptra hispid. Capsule with nearly indistinct neck. 
I. Trachymitra. Capsule wholly immersed; pedicel very short. 
Upper leaves long-acuminate subovate-lanceolate; costa percur- 
rent. Spores nearly smooth about 0,03 m. m. Monoecious. 
. B. Calyptra glabrous. Capsule gen. distinctly necked. 
II. Pseudo-Trematodon. Capsule with narrow often defluent 
neck; pedicel gen. long-exserted above the upper leaves. Spores 
about 0,02 m. m., more or less papillose. Us. monoecious. 
IH. Eu-Bruchia. Capsule with gen. thick (not defluent) and 
not longer neck; pedicel short-exserted or immersed. Paroecious 
or (B. Drummondii) monoecious, r. dioecious. 
I. Trachymitra Kindb. 
1.B.Ravenelii Wilson; Sullivant icon. musc. us 
Upper leaves nearly gradually acuminate; costa nearly filling 
upper part of the serrulate acumen. — Amer, r. »U. S.»: 
Sullivant. 
2.B.Caroline Austin; Britton in contrib. from Columbia coll. 
Upper leaves gen. from subobovate base abruptly acuminate; 
costa broadly bordered by lamina of the nearly entire acumen. 
— Amer. r. +U. S: Austin»: Britton. 
