HANDBOOK OF feRiTlSH HEPATICJE. 161 



bricate, divergent, roundish-ovate, from a 

 contracted base, apex and ventral margin 

 spinose-dentate ; perianth axillary, obcordate, 

 truncate, bilabiate, alae distinctly toothed, apex 

 densely spinulose. Jungermannia punctata, 

 Taylor Trans. Bot. Ed. I., 179. 



Form * flagellifera, Carr. Most of the 

 branches flagelliferous, intertwined, fastigiate, 

 naked or microphyllous, leaves not much 

 broader than the stems, obovate - cuneate, 

 patent, recurvo-convex, scarcely decurrent, 2-3 

 dentate ; amphigastria frequent. Plagiochila 

 punctata, Tayl. Lond. Jour. Bot., 1844, p. 371. 



var. 8 inermis, Carr. 1. c. Closely tufted 

 shoots slender, leaves roundish-ovate, ob- 

 liquely retuse, or bidentate at the apex, mar- 

 gins recurved, mostly entire. 



Either mixed with other hepaticae, and mosses, 

 or forming dense cushion- 

 like tufts on rocks, or invest- 

 ing the trunks of trees. Rhi- 

 zomes creeping, entangled, 

 dirty brown. Stems upright 

 or inclined, reddish-brown, 

 simple or dichotomous, or in- 

 novant from the axils of ter- 

 minal leaves. Shoots I to 4 

 inches, with distant or closely 

 imbricated alternate leaves. 

 Barren shoots nearly equal 

 throughout. Leaves broadly ovate, or obovate, 



M 



