Difference between revisions of "Alternanthera philoxeroides"
Abh. Königl. Ges. Wiss. Göttingen 24: 36. 1879.
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|common_names=Alligatorweed | |common_names=Alligatorweed | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=W | ||
| + | |label=Weedy | ||
| + | }}{{Treatment/ID/Special_status | ||
| + | |code=I | ||
| + | |label=Introduced | ||
| + | }}{{Treatment/ID/Special_status | ||
| + | |code=F | ||
| + | |label=Illustrated | ||
| + | }} | ||
|basionyms={{Treatment/ID/Basionym | |basionyms={{Treatment/ID/Basionym | ||
|name=Bucholzia philoxeroides | |name=Bucholzia philoxeroides | ||
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|elevation=0-200 m | |elevation=0-200 m | ||
|distribution=Ala.;Ark.;Calif.;Fla.;Ga.;Ill.;Ky.;La.;Miss.;N.C.;S.C.;Tenn.;Tex.;Va.;West Indies;native to South America. | |distribution=Ala.;Ark.;Calif.;Fla.;Ga.;Ill.;Ky.;La.;Miss.;N.C.;S.C.;Tenn.;Tex.;Va.;West Indies;native to South America. | ||
| + | |introduced=true | ||
|discussion=<p><i>Alternanthera</i> philoxerioides is said to reproduce only vegetatively in North America. I have seen no fruit or seed.</p> | |discussion=<p><i>Alternanthera</i> philoxerioides is said to reproduce only vegetatively in North America. I have seen no fruit or seed.</p> | ||
|tables= | |tables= | ||
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|publication title=Abh. Königl. Ges. Wiss. Göttingen | |publication title=Abh. Königl. Ges. Wiss. Göttingen | ||
|publication year=1879 | |publication year=1879 | ||
| − | |special status= | + | |special status=Weedy;Introduced;Illustrated |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V4/V4_880.xml |
|genus=Alternanthera | |genus=Alternanthera | ||
|species=Alternanthera philoxeroides | |species=Alternanthera philoxeroides | ||
Latest revision as of 22:01, 5 November 2020
Herbs, perennial, aquatic to semiterrestrial, stoloniferous, to 50 dm. Stems prostrate, forming mats, often fistulose, glabrous. Leaves sessile; blade narrowly elliptic, elliptic, or oblanceolate, 3.5–7.1 × 0.5–2 cm, herbaceous, apex acute to obtuse, glabrous. Inflorescences terminal and axillary, pedunculate; heads white, globose, 1.4–1.7 cm diam.; bracts not keeled, less than 1/2 as long as tepals. Flowers: tepals monomorphic, white, lanceolate or oblong, 6 mm, apex acute, glabrous; stamens 5; pseudostaminodes ligulate. Utricles not seen. Seeds not seen.
Phenology: Flowering early spring–summer.
Habitat: Ponds, ditches, streams, bayous
Elevation: 0-200 m
Distribution
Introduced; Ala., Ark., Calif., Fla., Ga., Ill., Ky., La., Miss., N.C., S.C., Tenn., Tex., Va., West Indies, native to South America.
Discussion
Alternanthera philoxerioides is said to reproduce only vegetatively in North America. I have seen no fruit or seed.
Selected References
None.