114 BRITISH MOSSES. 



Fig. 3. Schistidium peuinosa. 



Black Grimmia (a) . 



Colour. Blackish. 



Sterns. Branched^ tufted. 



Leaves (6) . With long white hair pointSj erect, spreading, very thickly crowded. 



Capsule. Very small, completely hidden by the leaves. Spring (?) . 



Locality. Near Largo, Scotland, 1864. Mr. Wilson. 



Fig. 4. Schistidium apocaepum. 



Sessile-fruited Grimmia [a) . 



Colour. Brownish. 



Stems. In loose tufts ; branches long and very much forked. 



Leaves (b) . Base broad, ovate-lanceolate above, with white poiats. 



Capsule. Of stout texture, elliptical ; annulus, none. Winter. 



Locality. Rocks and walls. 



Varieties. Gracile (c) . — Stems longer, leaves following each other (secund) . 



Rivulare (d) . — Dark green, leaves wide, ovate-lanceolate, obtuse. By streams. 



Fig. 6. Schistidium maritimum. 



Sea-side Orimm.ia (a) . 



Colour. Greenish brown. 



Stems. In round, thick tufts. 



Leaves (6) . Crowded, long, incurved when dry, lanceolate ; nerve excurrent. 



Capsule. Annulus, none ; teeth large, longer than in the other species, and very 



abundant. Autumn and Winter. 

 Locality. One of the few mosses found on rocks exposed to the sea ; very rare 



on calcareous rocks, but abundant on slate, where its round, thick tufts 



mark it at once. 



