Triangle Water Fern

Ceratopteris deltoidea Benedict, Bull. Torrey Club 36 : 472. 1909
Plants always partly submerged ; leaves up to 65 cm. long, the stipe flattened, not bulbous ; sterile leaves 15-45 cm. long, floating and emergent; lamina of the earliest leaves
VOI.UMK 16, Part 1, 1909]
29 30 simple, ovate or deltoid, in the following leaves 3-7-lobed and broadly rhombic to pentagonal, the lobes deltoid, acute; mature sterile leaves taller, erect, 25-50 cm. long, the stipes 10-20 cm. long, flattened, the lamina deltoid, acute, 20-35 cm. long, 15-25 cm. broad, 2-pinnate-pinnatifid, the lowest with 5-8 pairs of pinnae, broadly deltoid, 9-12 cm. long, 9-14 cm. broad, the ultimate segments lanceolate to deltoid, 3-4 cm. long, 0.5-3 cm. broad, acute ; sporophyls 40-65 cm. long, the stipes flattened, the lamina deltoid, 30^0 cm. long, 25-37 cm. broad, 4 times pinnately divided, the ultimate segments linear, 0.5-2 cm. long,
0.5-2 mm. broad; sporangium with welldeveloped annulus (40-50-celled) and lip-cells • spores 16.
Type locality : Orange Bay River, Jamaica.
Distribution : Florida and lyOuisiana ; Porto Rico ; Jamaica ; also in South America (?).