Benedict : The genus Ceratopteris 



47] 



mate segments broadly ovate or deltoid, usually blunt or rounded ; 

 lamina in succeeding leaves 2-4 times divided with narrowly ob- 

 long, rounded segments, grading into the slightly taller sporophyls 

 with linear segments : leaves in the anchored plants as above but 







Figure 2. Ceratopteris Lockharti (Hook. & Grev. ) Kunze, Glen Island, Fsse- 

 qnibo River, Demeraraj British Guiana, Jenman, About one third the natural size. 



with the stipes not bulbous, with the sporophyls about twice as 

 tall as the sterile leaves and without intermediate forms : sporangia 

 in one row along each margin, without lip-cells, the annulus 4-10- 

 celled, rarely more; spores '^2, 



