280 HANDBOOK OF BRITISH HEPATICJE. 



Riccia glauca, Linn. 



Frond dichotomously divided, substellate ; 

 laciniae obovately-linear, emarginate, bilobate, 

 plane, channelled at the apex, punctate ; 

 margin membranaceous, of the same colour 

 beneath. 



Riccia glauca, Linn. Sp. 1605; Eng. Bot. 

 t. 2546; Lindenb. Mon. p. 417, t. 19; Cooke 

 Hep. fig. 197 ; Carr. and Pears. Exs. No. 138. 

 Riccia crystallina a, Hook. Eng. Fl. V., i., 

 p. 98. 



In glaucous green tufts, on moist ground. (Fr. 

 Spring.) 



var. a major, Roth. Frond radiate, laciniae 

 obovate or obcordate, rather bilobate, crenate 

 at the apex, extremities plane or channelled. 

 Lind. Mon. t. xix., f. 12, 13. 



Lichen minor, Dillw. Muse. 533, t. 78, f. 10. 



var. /3 minor, Lind. Frond and lobes some- 

 what triangular, sulcate. Lind. Mon. t. xix. 

 (figs. 14, 15). 



Lichen minor, Dillw. Muse. 533, t. 78, f. 13. 



Fronds forming roundish patches, conspicuous 

 by their glaucous hue. Of a 

 thick rather fleshy substance, 

 and firmly fixed to the soil 

 by fibrous radicles (fig. 195). 

 Fruit disposed beneath the 

 surface, in furrows radiating 

 from the centre of the frond, and running along 



