Alternanthera philoxeroides
Abh. Königl. Ges. Wiss. Göttingen 24: 36. 1879
Common names: Alligatorweed
Basionyms: Bucholzia philoxeroides Martius Beitr. Amarantac., 107. 1825
Synonyms: Achyranthes philoxeroides (Martius) Standley
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
Phenology: Flowering early spring–summer.
Habitat: Ponds, ditches, streams, bayous
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.
Discussion
Alternanthera philoxerioides is said to reproduce only vegetatively in North America. I have seen no fruit or seed.
References
None.
Lower Taxa
No lower taxa listed.
Facts about "Alternanthera philoxeroides"
Author | Steven E. Clemants + |
Authority | (Martius) Grisebach + |
Basionyms | Bucholzia philoxeroides + |
Common name | Alligatorweed + |
Distribution | Ala. +, Ark. +, Calif. +, Fla. +, Ga. +, Ill. +, Ky. +, La. +, Miss. +, N.C. +, S.C. +, Tenn. +, Tex. +, Va. +, West Indies + and native to South America. + |
Elevation | 0-200 m + |
Habitat | Ponds, ditches, streams, bayous + |
Illustrator | Yevonn Wilson-Ramsey + |
Introduced | true + |
Phenology | Flowering early spring–summer. + |
Publication title | Abh. Königl. Ges. Wiss. Göttingen + |
Publication year | 1879 + |
Reference | None + |
Source xml | https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse grained fna xml/V4/V4 880.xml + |
Synonyms | Achyranthes philoxeroides + |
Taxon family | Amaranthaceae + |
Taxon name | Alternanthera philoxeroides + |
Taxon parent | Alternanthera + |
Taxon rank | species + |
Volume | Volume 4 + |