EXPLANATION OF TEE PLATES. 



95 



Leaves (b) . Subulate ; the upper dull green, the lower red. 



Floivers and Fruit. Capsule brown, oval. Peristome soon falling (fugacious) . 



Antheridia in the axils of the pericheetial leaves, naked. Winter. 

 Locality. On rocks. 



II. Dioicous. 

 Fig. 7. Didymodon luridus. 

 Dark Twin-toothed Moss (a) . 



Colour. Dull green. 

 Stems. Branched, tuftea 



Leaves (b) . Ovate-lanceolate, margin turned back (reflexed) . 

 Capsule. Cylindrical. Winter. 

 Locality. On limestone walls. Rare. 



Fig. 8. Didymodon cylindricus. 

 Slender -fruited Twin-toothed Moss (a) . 



Colour. Dark green. 



Stems. In patches, branched. 



Leaves (6) . Linear-lanceolate, very much spreading. 



Capsule. Of thin texture, cylindrical. Not common. Autumn. 



Locality. Moist rocks. 



Fig. 9. Didymodon flexifolius. 



Bent-leaved Twin-toothed Moss (a) . 



Colour. Dark yellow green. 



Stems. Slender, branched, in patches. 



Leaves (b) . Spreading, twisted and bent, very much so when dry ; ligulate, 



serrated at the apex. 

 Capside. Small ; very rare. Spring. 



Locality. On moors, particularly where the ground has been burnt. 



