— 311 — 



* O.Sardagnae Ventuii. 



Capsule with long defluent neck. — Dolomitic rocks r. Eur. 

 Switzerl.l Austria: Venturi. 



* O.Yenturii Notaris. 



Capsule with short subdefluent neck. — Rocks r. Eur. 

 » Austria »: Venturi. 



b. Peristomial teeth gen. partite and papillose. 

 53.0.Lescurii Austin; Sulliv. ic. m.; Kindb. rev. bryol. 1896. 



Leaves nearly smooth short obtusate subobtuse. Capsule 

 immersed with short very thick not defluent neck; teeth erect; 

 calyptra nearly glabrous. Tufts low. — Limestone rooks r. 

 Amer. Can. Brit. Col.: Macoun. » 



* O.Porteri Austin. 



» Capsule nearly exserted. Amer. r. U. S.»: Lesq. et Jam. 

 54.0.Baldaccii Venturi et Bottini. 



Leaves very papillose somewhat long and acuminate. Capsule 

 immersed with short defluent neck; teeth patent; calyptra spa- 

 ringly hairy. Tufts about 2 c. m. high. — Alp. calcareous 

 rocks r. Eur. Spain: Dieck, com. Roell. » Montenegro »: Bottini. 



7. Pumila. 



A. Capsule arrounded below when operculate, finally stran- 

 gulate when dry. Calyptra campanulate. 

 55.0.Schimperi Hammar. — O. fallax Schimper. ' 



Leaves broadly ovate-lanceolate, gen. broadly obtuse and 

 snbcanaliculate; basal cells short-rectangular. Capsule suboval 

 not or slightly emergent; stomata nearly superficial; calyptra 

 glabrous. — On trees and roofs. Eur. not uncommon. SwedenI 

 Austria: Venturi. Amer. r. Can.: Macoun. 

 56.0.8traiigulatuin Beauvois; Sulliv. icon. muse. 



Differs from the last: Leaves often subulate at apex; basal 

 cells sometimes longer. Capsule finally exserted; calyptra spa- 

 ringly hairy. • — On trees or r. on rocks, r. Amer. Can.: Macoun. 



B. Capsule not arrounded below when operculate. 



a. Capsule not distinctly constricted when dry. Leaves 

 subcanaliculate. 

 57.0.pallens Bruch. 



Leaves not r. obtuse at apex, faintly papillose, more or less 

 long, often decurrent; inner basal cells somewhat long. Cap-' 

 sule partly emergent somewhat thick with long defluent neck, 

 us. pale yellow; stomata us. not much immersed; teeth us. 

 orange; calyptra campanulate yellowish us. glabrous. Stem us. 

 about 1 c. m. high. — On trees princ. in warmer districts. 



