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For classification they seem to fall naturally into two main divisions, 
those having decurrent leaves (the leaf tissue extending down the stem 
below the place of attachment), and those whose leaves are not decurrent. 
Of the latter class, leaves not decurrent, Cephalozia biciispidata (L.) 
Dumort , (Figures i and 2,) is perhaps the most common species. The 
plants are either prostrate or ascending, bright green in color, and form a 
thick mat over damp soil in shaded places, or grow over other hepatics and 
mosses. The leaves are round-ovate, deeply cleft nearly to the middle, the 
lobes being straight and scarcely connivent, the lower lobe tending to be 
narrower than the upper, both lobes being acute. The lower leaves are 
somewhat smaller and more distant than the upper ones. (Fig. 2.) The 
natural tendency of the leaves is to fold together along the stem. (Fig. 2.) 
