View source for Ceratopteris

{{Treatment/ID
|accepted_name=Ceratopteris
|accepted_authority=Brongniart
|publications={{Treatment/Publication
|title=Bull. Sci. Soc. Philom. Paris
|place=sér. 3, 8: 186. 1821
|year=1821
}}
|common_names=Antler ferns;water ferns;floating ferns
|basionyms={{Treatment/ID/Synonym
|name=Parkeria
|authority=Hooker
}}
|synonyms=
|hierarchy=Parkeriaceae;Ceratopteris
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Parkeriaceae]]</div><div class="higher-taxon"><small>genus</small>[[Ceratopteris]]</div></div>
|etymology=Greek cerato, horned, and pteris, fern, referring to the antlerlike fertile leaf
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>2–120 cm. <b>Stems</b> 1–10 mm diam., sparsely scaly. <b>Leaves</b> erect. <b>Proximal</b> leaves broad, simple and lobed to 4-pinnate, glabrous; distal leaves finely dissected with linear ultimate segments. <b>Sporangia</b> nearly sessile, usually densely packed, globose. <b>Spores</b> tetrahedral.</span><!--

-->{{Treatment/Body
|distribution=Tropical;subtropical;and warm temperate regions worldwide.
|discussion=<p>Species 3–4 (3 in the flora).</p>
|tables=
|references={{Treatment/Reference
|id=devol1957a
|text=DeVol, C. E. 1957. The geographical distribution of Ceratopteris pteridoides. Amer. Fern J. 47: 67--72.
}}{{Treatment/Reference
|id=hickok1974a
|text=Hickok, L. G. and E. J. Klekowski Jr. 1974. Inchoate speciation in Ceratopteris: An analysis of the synthesized hybrid C. richardii × C. pteridoides. Evolution 28: 439--446.
}}{{Treatment/Reference
|id=hickok1977a
|text=Hickok, L. G. 1977. Cytological relationships between three diploid species of the fern genus Ceratopteris Brongn. Canad. J. Bot. 55: 1660--1667.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|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|Ceratopteris pteridoides]]
|-id=key-0-1
|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.
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Sporangia with 32 spores.
|[[Ceratopteris thalictroides|Ceratopteris thalictroides]]
|-id=key-0-2
|2
|Sporangia with 16 spores.
|[[Ceratopteris richardii|Ceratopteris richardii]]
|}
</div></div><!--

-->{{#Taxon:
name=Ceratopteris
|author=
|authority=Brongniart
|rank=genus
|parent rank=family
|synonyms=
|basionyms=Parkeria
|family=Parkeriaceae
|distribution=Tropical;subtropical;and warm temperate regions worldwide.
|reference=devol1957a;hickok1974a;hickok1977a
|publication title=Bull. Sci. Soc. Philom. Paris
|publication year=1821
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V2/V2_554.xml
|genus=Ceratopteris
}}<!--

-->[[Category:Treatment]][[Category:Parkeriaceae]]