170 HANDBOOK OP BRITISH MOSSES. 



gium spherical, oblong and incurved when dry, deeply sulcate 

 lid conical, blunt ; teeth of outer peristome red, joined at the 

 base by a pale membrane, horizontal when wet, and closing 

 the orifice of the sporangium, sometimes perforated or split, 

 inner teeth pink, about half as long as the outer, slender. 



2. B. pomiformis, Hedw. ; monoicous ; stems dichotomous ; 

 branches fastigiate ; leaves spreading, crisped when dry, linear- 

 lanceolate, toothed ; sporangium subglobose, cernuous. — Hook. 

 t$ Wils. t. xxiii. ; Eng. Bot. t. 998. ; (Plate 16, fig. 2) ; Moug. 

 $ Nest. n. 137. 



/3. crispa ; leaves less crowded ; branches often longer than 

 the fruitstalks.— Eng. Bot. t. 1526.; {Moug. §• Nesi. n. 1026.) 



On dry shady banks, and in fissures of rocks in a sandy or 

 granitic soil. Bearing fruit in early summer. 



Forming soft, glaucous or yellowish-green cushions. Stems 

 matted below with rusty down ; leaves erecto-patent, keeled, 

 elongato-lanceolate, with a double row of serratures, not 

 sheathing as in the last, scabrous ; sporangium spherical, sul- 

 cate when dry; outer teeth longer than in the last, more re- 

 gular, attenuated above and joined into a cone when moist 

 as in Conostomum; inner peristome yellowish, shorter than 

 the outer; spores strongly granulated. 



3. B. Halleriana, Hedw. ; monoicous ; stems elongated ; 

 branches subfastigiate ; leaves spreading, bristle-shaped, from 

 a sheathing base, sharply toothed, somewhat crisped when dry ; 

 fruitstalk shorter than the leaves, slightly curved. — Hook. ty 

 Wils. t. xxiii. ; Eng. Bot. t. 997. ; {Moug. $ Nest. n. 35?) 



On alpine or subalpine rocks. Bearing fruit in summer. 



Forming soft loose, bright-green tufts. Stems matted below 

 with rusty rootlets; leaves spreading or subsecund; sheath 

 whitish ; fruitstalks very short, curved, single or gregarious, 

 appearing lateral from the growth of innovations from the tip 



