Difference between revisions of "Najadaceae"
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|family=Najadaceae | |family=Najadaceae | ||
|illustrator=John Myers | |illustrator=John Myers | ||
| + | |illustration copyright=Flora of North America Association | ||
|distribution=Nearly worldwide. | |distribution=Nearly worldwide. | ||
|reference=fehre1991a;fehre1991b;haynes1977a;thorne1993a | |reference=fehre1991a;fehre1991b;haynes1977a;thorne1993a | ||
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|publication year= | |publication year= | ||
|special status= | |special status= | ||
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Latest revision as of 20:29, 5 November 2020
Herbs, annual, rarely perennial, not rhizomatous, caulescent; turions absent. Leaves nearly opposite or appearing whorled, submersed, sessile; sheath not persisting longer than blade, not leaving scar when shed, not ligulate, not auriculate or rarely auriculate; intravaginal squamules scales, 2, linear. Inflorescences axillary, solitary flowers or cymes, often subtended by spathe as involucre, sessile or short-pedunculate. Flowers unisexual, staminate and pistillate on same or separate plants; subtending bracts absent; perianth absent; stamens 1; anthers dehiscing irregularly; pollen spheric; pistils 1, not stipitate; ovules basal, anatropous. Fruits achenelike. Seeds 1; embryo straight.
Distribution
Nearly worldwide.
Discussion
Genus Genera 1, species 40 (8 species in the flora).
