— 395 — 



—- Dry siliceous rocks in arctic distr. r. Anier. Greenl.: Berg- 

 gren, com. Nathorst. 



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. Vane, isl.: Macoun. 



bb. Leaves crowded; the perichetial smooth. 

 iS.A.frigida Huebener. 



Leaves broadly acuminate subobtuse; outer perichetial costate. 

 Tufts dense reddish brown or blackish. — Siliceous alp. rocks. 

 Eur. not r. Spainl Portugal and Corsica: Levier. Germany: 

 Limpricht. Austria; Breidler. 

 14.A.aiigustata Lindberg. 



Leaves narrowly long-acuminate subacute: perichetial nerveless. 

 Tufts loose blackish very low. — In alp. region r. Eur. » Austria 

 1600 metr. a. sea: Breidler »: Limpricht. 



Fam. 35. BructiiacesB. 



160. Brnchia Schwsegrichen. 



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. 



III. Eu-Bruchia. Capsule with gen. thick (not defluent) and 

 not longer neck; pedicel short-exserted or immersed. Paroecious 

 or {B. Drummondii) monoecious, r. dioecious. 



1. Trachymitra Kindb. 

 l.B.RaTCnelii Wilson; SuUivant icon. muse. 



Upper leaves nearly gradually acuminate; costa nearly filling 

 upper part of the serrulate acumen. — Amer. r. »U. S.»: 

 SuUivant. 

 2.B.Carolinae Austin; Britton in contrib. from Columbia ooU. 



Upper leaves gen. from subobovate base abruptly acuminate; 

 costa broadly bordered by laminU of the nearly entire acumen. 

 — Amer. r. »U. S.: Austin*: Britton. 



