Liverworts or Hepatics 



Leaves. Crowded, hiding the stem, roundish; lobes lance- 

 shaped, folded toward each other, the front lobe convex and 

 parted half-way down, the back lobe similar, but much smaller; 

 the margins all divided into numerous long hair-like teeth. Under 

 leaves (ampbigastra) pressed to the stem, rectangular, nearly as 

 large as the upper, four- to five-lobed with marginal teeth. Leaf- 

 cells small, roundish, with thick walls. 



Habit of flowering. Male and female flowers on separate 

 plants, dioicous. 



Perianth. Pear-shaped, pale, dull yellow, mouth narrow, and 

 margined with small short teeth. The bracts at the base un- 

 equally four-lobed with teeth like the leaves. 



Spore-case. Nearly spherical. 



Genus BAZZANIA, Gr. and Benn. 



The vegetative part of these plants grows in large mats, 

 bright or dark green; the branching stems are 2 to 4 inches long, 

 mostly creeping and bearing many long whip-like shoots with 

 minute leaves and few whitish root-hairs. 



Under leaf. / Leaf-apex 3-toothed. 



Perianth. 

 Leaves from the base of 



ti 



the perianth. Leaves from male branch. 



Bazzania trilobata. 



The leaves are egg-shaped, over-lapping and embracing the 

 stem half-way around, they are narrowed to the apex which is 

 bluntly three-to five-toothed. The leaf-cells are six-sided and 

 opaque. The male and female flowers are on separate plants 

 (dioicous'). The perianth is white and tubular with slight folds in 

 the wall and splits open at one side, the leaves at the base (bracts) 

 are very small, scale-like and slightly toothed. 



The genus Bahama may be easily distinguished from all other 

 genera by the leaves which are dark green, three-toothed and 



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