Difference between revisions of "Azolla caroliniana"
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>dark green or with margins of bright crimson or whole plants dark red, free-floating or forming multilayer mat to 4 cm thick under good conditions; plants infrequently fertile. <b>Stems</b> prostrate, 0.5–1 cm. <b>Largest</b> hairs on upper leaf lobe near stem with 2 or more cells; broad pedicel cell often 1/2 or more height of hair, apical cell curved, with tip nearly parallel to leaf surface. <b>Megaspores</b> without raised angular bumps or pits, densely and uniformly covered with tangled filaments.</span><!-- |
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|publication year=1810 | |publication year=1810 | ||
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|genus=Azolla | |genus=Azolla | ||
|species=Azolla caroliniana | |species=Azolla caroliniana | ||
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Revision as of 13:25, 27 July 2019
Plants dark green or with margins of bright crimson or whole plants dark red, free-floating or forming multilayer mat to 4 cm thick under good conditions; plants infrequently fertile. Stems prostrate, 0.5–1 cm. Largest hairs on upper leaf lobe near stem with 2 or more cells; broad pedicel cell often 1/2 or more height of hair, apical cell curved, with tip nearly parallel to leaf surface. Megaspores without raised angular bumps or pits, densely and uniformly covered with tangled filaments.
Habitat: Stagnant or slow-moving water in ponds, lakes, marshess, swamps, and streams.
Distribution
Ont., Ala., Ark., Conn., Del., Fla., Ga., Ill., Ind., Kans., Ky., La., Md., Mass., Mich., Mo., Nebr., N.J., N.Y., N.C., Ohio, Okla., Pa., S.C., S.Dak., Tenn., Tex., Va., W.Va., Mexico, West Indies, South America, Europe, Asia.
Discussion
The sporophyte of Azolla caroliniana commonly survives throughout the year in temperate areas (with hard frosts and prolonged ice cover). It is the best adapted of all species for subsistence on mud. Azolla caroliniana is rarely collected with sporocarps.
Selected References
None.