Mosses and Lichens 



have the anterior margin of each leaf lapping the posterior margin 

 of the leaf in front. 



The genus was named for M. Bazzani, an Italian professor of 

 anatomy. 



Bazzania trilobata, L. See Plate X. 



Habit and habitat. On damp shady banks, forming extensive 

 cushions. 



Name. The specific name trilobata is com- 

 pounded of tres (tri-), three, and lobatus, lobed, 

 referring to the apex of the leaf. 



Plants (gdmetophyte) . Shining olive-green; 

 stems simple or once- or twice-forked, } to 5 

 inches long; procumbent or creeping, rootlets 

 few, beset on the under side with minute leafy 

 scales; and numerous thread-like whips (flagellcz) 

 about an inch long. 



Stem with sporo- 

 phyte, the long 

 slender pedicel ris- 

 ing from the per- 

 ianth. 



View of under side of 

 stem to show the third 

 row of leaves. 



Stem with leaf 

 enlarged to show 

 cell-structure. 



Under 

 leaf. 



The tip 

 of the per- 

 ianth. 



Bazzania trilobata 



Leaves. Olive-green, the upper about i times longer than 

 broad and placed at right angles to the stem in two rows, the 

 sides of the leaves overlapping like shingles, the anterior margin 

 of one leaf overlapping the posterior margin of the leaf in front, 

 apex with three acute teeth, texture firm; the under leaves 

 (amphigastra) broad, four-sided, apex three- to five-toothed. 



Habit of flowering. Female flowers on short branches on 

 separate plants. Male flower-clusters minute aments, with folded 

 and toothed bracts, antheridia solitary. 



Perianth. Highly exserted, nearly white, oblong, narrower 

 upwards; mouth slit on one side and with a few teeth. Bracts 

 at the base oval, fringed at the apex and delicate in texture. 



Spore-case. Dark shining-brown, ovate, on a long, slender, 

 white pedicel, the valves slit to the base to form a Roman cross; 

 elaters twice spiral. 



106 



