116 SYNOPSIS OP BRITISH MOSSES. 



apex continued into a long hair^ nerve not reaching 

 apex, margin plane, basal cells elongate, diaphanous, 

 upper large, rounded, thickened. Caps, ovate, Hghtly 

 striate, subcernuous, furrowed when dry, lid convex, 

 with an obtuse point. Calyptra dimidiate, two-lobed. 

 Monoicous. [Dr. Braithwaite, Journ. Bot. (N.S.), 

 vol. i. 195.] 



Mortar of old walls and limestone rocks. 



Autumn, spring. 



Near Hatton, Warwick, 1872 (J. Bagnall). 



Sections. EU-GRIMMIA. 



Caps, exsertedj regular, on an arcuate seta. Calyptra 

 mitriform, lobed, rarely cucullate. 



a. Calyptra cucullate. 



213. G. orbicularis, B. and 8. Densely pulvinate. 

 L. oblong lanceolate, rounded obtuse at apex, with 

 nerve excurrent into a long hair-point, basal cells 

 large. Caps, almost spherical, drooping, on a curved 

 yellowish seta, slightly striate, lid small, convex, 

 annulus narrow. Perist. teeth trifid, more distantly 

 barred than the next. Monoicous. 



Limestone rocks. February, March. 



b. Calyptra lobed, upright or oblique. 

 1. Monoicous. 



214. G. pulvinata, Dill. Densely pulvinate. St. 

 ^ — 1 inch. L. elliptic, lanceolate, margin recurved, 

 apex rather obtuse, terminated by the nerve excurrent 

 into a long hair-point. Caps, drooping, reddish-brown 

 ovoid, eight-furrowed, lid convex, with a straight beak. 

 Calyptra lobed at base. Perist. teeth dark red, bi- 

 trifld, annulus large. 



