Bull. Sci. Soc. Philom. Paris sér. 3, 8: 186. 1821.

Common names: Antler ferns water ferns floating ferns
Etymology: Greek cerato, horned, and pteris, fern, referring to the antlerlike fertile leaf
Basionym: Parkeria Hooker Exot. Fl. 2: plate 147. 1825
Treatment appears in FNA Volume 2.

Plants 2–120 cm. Stems 1–10 mm diam., sparsely scaly. Leaves erect. Proximal leaves broad, simple and lobed to 4-pinnate, glabrous; distal leaves finely dissected with linear ultimate segments. Sporangia nearly sessile, usually densely packed, globose. Spores tetrahedral.


Tropical, subtropical, and warm temperate regions worldwide.


Species 3–4 (3 in the flora).


1 Sterile leaves simple, palmately or pinnately lobed, sometimes 2–4-pinnate, deltate to cordate to ovate; proximal pinnae or veins of lobes usually opposite; petioles frequently inflated. Fertile leaves usually deltate to cordate to reniform; sporangia lacking annulus or annulus well developed, indurate cells 0–10(–40). Ceratopteris pteridoides
1 Sterile leaves (1–)2–3-pinnate, lanceolate, lance-ovate, ovate to deltate; proximal pinnae usually alternate; petioles usually not inflated. Fertile leaves lanceolate, sometimes ovate, deltate, or cordate; sporangia with well-developed annulus, indurate cells 13–71. > 2
2 Sporangia with 32 spores. Ceratopteris thalictroides
2 Sporangia with 16 spores. Ceratopteris richardii
... more about "Ceratopteris"
Robert M. Lloyd +
Brongniart +
Parkeria +
Antler ferns +, water ferns +  and floating ferns +
Tropical +, subtropical +  and and warm temperate regions worldwide. +
Greek cerato, horned, and pteris, fern, referring to the antlerlike fertile leaf +
Bull. Sci. Soc. Philom. Paris +
devol1957a +, hickok1974a +  and hickok1977a +
Ceratopteris +
Parkeriaceae +