— 303 — 



* O.acuininatnm Philibert. 



Capsule more abruptly narrowed below, sometimes Buboval; 

 teeth rudimentary. — Trees r. Eur. France: Philibert. Italy: 

 Venturi. 



* Cpraemorsum Venturi. 



Leaves less papillose. Capsule oval; teeth often rudimentary, 

 deflexed when evolute; calyptra hairy. Stem 2 — 3 c. m. high. 

 Rocks r. Amer. U. S.: Roell. 



4. Rupestria. 

 14.0.rupestre Schleicher. 



Leaves ovate-lanceolate often rigid, us. faintly papillose and 

 not subulate-acuminate. Capsule brown gradually narrowed 

 below, us. immersed; pedicel us. shorter; teeth yellowish. Tufts 

 us. brown or blackish and not high. — Us, growing on rocks. 

 Eur. common. Sweden, Norway, Switzerl.l Austria: Venturi. 

 Amer. Can.: Macoun. 



* O.Franzonii Notaris. 



Tufts green. Leaves less rigid. — On trees and rocks r. 

 Eur, Switzerl.l 



* O.Sturmii Homschuch. 



Leaves longer acuminate subcanaliculate. Capsule arrounded 

 below; teeth paler. Tufts us. blackish. — Rocks not common. 

 Eur. Sweden, Norway, Switzerl.l France: Husnot. Amer. Can.: 

 Macoun. 

 15.0.texannm SuUivant icon, muscor. 



Differs from 0. rupestre *Sturmii: Leaves distinctly carinate 

 and less rigid, sometimes nearly subulate; basal cells orange. 

 Peristomial teeth dark yellow or orange. Tufts us. brown-green. 

 Stem often very long. — Rocks r. Amer. Can. Pacif. distr,: 

 Macoun. 

 16.0.Douglasii Duby; Lesq. et Jam. 



Leaves ovate lanceolate long- acuminate subsubulate very pa- 

 pillose not rigid. Capsule pale brown nearly exserted, arroun- 

 ded below, nearly smooth when young; teeth erect whitish or 

 pale; pedicel somewhat long. Tufts yellowish green; stem often 

 long. — Alp. rocks r. Amer. Pacif. distr. Can. Brit. Col.: Ma- 

 coun. U. S.: Roell. 



5. Leiocarpa.' 

 IT.O.leiocarpum Br. eur. — O. striatum (Hedw.) Bridel. 



Leaves ovate-lanceolate subulate-acuminate carinate us. long. 

 Capsule brown- yellow suboval or oval-oblong quite smooth; 

 neck not distinct; teeth opake finally appressed, orange in 



