146 SYNOPSIS OP BRITISH MOSSES. 



Fallow fields. April. 



b. Perist. perfect. 



305. F. calcarea, Wald. [F. Muhlenbergii, Schwg., et 

 Hibernica, Hook., ed. 1, p. 126). Loosely CEespitose. 

 L. lower remote^ oblong-lanceolate, deflexed, upper 

 erecto-patentj obovate-oblong, more or less acuminate, 

 apiculate or flexuoso-subulate at apex, below which 

 the yellowish nerve vanishes, margin obtusely serrate 

 or subentire. Caps, turgid, brownish, on an upright 

 (when dry twisted) seta, lid convexo-conical. 



Walls, rocks, and stones. Not always confined to 

 limestone. Spring. 



c. Perist. perfect. Caps, annulate, on a long, 

 flexuose or arcuate seta. 



306. F. hygrometrica, Linn. St. i — 1 inch. L. 

 lower scattered, upper ovate-lanceolate, concave, clus- 

 tered into a bulb-like tuft, nerved to apex, mai:gins 

 reflexed. Caps, broadly pyriform, incurved, mouth ob- 

 lique, with a corrugate border, deeply sulcate when dry, 

 on a long, flexuose seta, lid convex, with a red border. 



Banks and walls, old cinder-heaps, &c. Common. 



May — September. 



Var. j8. PATULA. St. slender, branched. L. undu- 

 late, spreading, twisted when dry. 



Var. 7. CALVESCENS. Seta long and straight. Caps, 

 slender, almost erect. 



307. r. microstoma, B. and 8. Habit of last, but 

 smaller. L. in a comal bud. Caps, pyriform, turgid, 

 scarcely furrowed when dry, on a thicker, arcuate seta, 

 mouth very small, with a smooth border. Inner perist. 

 very imperfect. 



Damp stony places. August, September. 



Maresfield, Sussex (Mitten, 1864). 



