134 SYNOPSIS OP BRITISH MOSSES. 



p. 177.) St. erect, sparingly branched. L. narrow, 

 lanceolate, sharply acuminate, nerve thick, areolaj 

 narrow at base, crisped when dry. Caps, narrow, 

 subcylindrical, much exserted, with 8 long striae, 

 prominent when dry, and then with 8 shorter, alter- 

 nating, spurious ones just below the mouth. Perist. 

 teeth in pairs. Calyptra furrowed, very hairy. [Supp. 

 Bry. Eur., fasc. i. ii.] 



Limestone walls and rocks. Spring. 



b. Rupestroe. 



Taller. L. minutely areolate above. Calyptra more 

 or less hairy, campanulate. Caps, striate, short-necked, 

 immersed or slightly exserted. Perist. teeth 16, free. 



1. Perist. simple. 



265. 0. cupnlatum, Hoffm. St. under 1 inch. L. 

 spreading, straight and loosely imbricate when dry, 

 lanceolate,, keeled, margin reflexed, densely papillose, 

 lower brownish, nerve distinct. Caps, obovate, 16- 

 striate, urceolate when dry, with a shortly beaked lid. 

 Calyptra hairy. Perist. simple, of 16 free equidistant 

 teeth, spreading when dry. 



Rocks and walls. May, June. 



Var. ^. NDDUM. Calyptra naked, longer. Caps, 

 oval-oblong, less striate. Teeth erect. 



266. 0. Sturmii, Hop. and Eornsch. In loose cushions. 

 St. short and erect, or longer and prostrate. L. patent 

 and recurved when moist, incumbent when dry, margin 

 subrevolute, acutely costato-carinate, upper cells gene- 

 rally in two strata, papillose. Caps, generally immersed, 

 obovate, with 8 obsolete striee, when dry 8-ribbed and 

 constricted below the mouth. Calyptra more or less 



