View source for Limnobium spongia

{{Treatment/ID
|accepted_name=Limnobium spongia
|accepted_authority=(Bosc) Richard ex Steudel
|publications={{Treatment/Publication
|title=Nomenclator Botanicus. Editio secunda
|place=2: 45. 1841
|year=1841
}}
|common_names=American frogbit
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Hydrocharis spongia
|authority=Bosc
|rank=species
|publication_title=Ann. Mus. Natl. Hist. Nat.
|publication_place=9: 396. 1807
}}
|synonyms=
|hierarchy=Hydrocharitaceae;Limnobium;Limnobium spongia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Hydrocharitaceae]]</div><div class="higher-taxon"><small>genus</small>[[Limnobium]]</div><div class="higher-taxon"><small>species</small>[[Limnobium spongia]]</div></div>
|volume=Volume 22
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> to 50 cm. <b>Roots</b> branched; stolon buds with 10 or more roots. <b>Leaves</b> floating or emersed in dense vegetation and when stranded; blade 1–10 × 0.9–7.8 cm; primary veins forming 30–80° angle with midvein, ascending, aerenchyma extensive, nearly margin to margin, individual aerenchyma space (located ca. 1 mm from either side of midvein) , 0.4–1.6 mm wide, 1 mm from midveinacross its longest axis. <b>Flowers</b>: staminate flowers with 9–12(–18) stamens; pistillate flowers with 3–4 petals; ovary 6–9-carpellate, locules 6–9; styles 2-fid nearly to base; ovules 200. <b>Fruits</b> 4–12 mm diam.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer–fall.
|habitat=Floating on slow-moving water of streams, bayous, and lakes or stranded along shore
|elevation=0–100 m
|distribution=Ala.;Ark.;Del.;Fla.;Ga.;Ill.;Ky.;La.;Md.;Miss.;Mo.;N.Y.;N.C.;Okla.;S.C.;Tenn.;Tex.;Va.
|discussion=<p>No specimens have been seen from New Jersey, but although the species is to be expected there.</p><!--
--><p><i>Limnobium spongia</i> has two leaf forms, often on the same plant. The floating leaves have a thick layer of aerenchyma on the abaxial surface; the emersed leaves lack such tissue. Flowering and fruiting are predominantly on individuals with emersed leaves. Following pollination, the peduncle becomes recurved, forcing the developing fruit below the water surface.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Limnobium spongia
|authority=(Bosc) Richard ex Steudel
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Hydrocharis spongia
|family=Hydrocharitaceae
|phenology=Flowering summer–fall.
|habitat=Floating on slow-moving water of streams, bayous, and lakes or stranded along shore
|elevation=0–100 m
|distribution=Ala.;Ark.;Del.;Fla.;Ga.;Ill.;Ky.;La.;Md.;Miss.;Mo.;N.Y.;N.C.;Okla.;S.C.;Tenn.;Tex.;Va.
|reference=None
|publication title=Nomenclator Botanicus. Editio secunda
|publication year=1841
|special status=Illustrated;Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V22/V22_424.xml
|genus=Limnobium
|species=Limnobium spongia
}}<!--

-->[[Category:Treatment]][[Category:Limnobium]]