Difference between revisions of "Alternanthera sessilis"
Cat. Pl. Hort. Monsp., 77. 1813.
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|common_names=Sessile joyweed | |common_names=Sessile joyweed | ||
| + | |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=Gomphrena sessilis | |name=Gomphrena sessilis | ||
|authority=Linnaeus | |authority=Linnaeus | ||
| + | |rank=species | ||
|publication_title=Sp. Pl. | |publication_title=Sp. Pl. | ||
|publication_place=1: 225. 1753 | |publication_place=1: 225. 1753 | ||
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|elevation=0-20 m | |elevation=0-20 m | ||
|distribution=Ala.;Fla.;Ga.;La.;Mexico;West Indies;Central America (Belize;Costa Rica;Guatemala;Nicaragua;Panama);South America;Africa;Asia. | |distribution=Ala.;Fla.;Ga.;La.;Mexico;West Indies;Central America (Belize;Costa Rica;Guatemala;Nicaragua;Panama);South America;Africa;Asia. | ||
| + | |introduced=true | ||
|discussion=<p><i>Alternanthera sessilis</i> is reported from Maryland, Mississippi, South Carolina, and Texas, but I have seen no specimens from these states.</p> | |discussion=<p><i>Alternanthera sessilis</i> is reported from Maryland, Mississippi, South Carolina, and Texas, but I have seen no specimens from these states.</p> | ||
|tables= | |tables= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Alternanthera sessilis | name=Alternanthera sessilis | ||
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|authority=(Linnaeus) R. Brown ex de Candolle | |authority=(Linnaeus) R. Brown ex de Candolle | ||
|rank=species | |rank=species | ||
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|publication title=Cat. Pl. Hort. Monsp., | |publication title=Cat. Pl. Hort. Monsp., | ||
|publication year=1813 | |publication year=1813 | ||
| − | |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_884.xml |
|genus=Alternanthera | |genus=Alternanthera | ||
|species=Alternanthera sessilis | |species=Alternanthera sessilis | ||
Latest revision as of 22:01, 5 November 2020
Herbs, annual or perennial, 2–6 dm. Stems procumbent, pubescent in lines, glabrate. Leaves sessile; blade elliptic to oblong or oblanceolate, 1.2–5 × 0.5–2.2 cm, apex obtuse to acute, glabrous. Inflorescences axillary, sessile; heads white, subglobose or ovoid, 0.5–1.1 cm; bracts keeled, ca. 1/2 as long as tepals. Flowers: tepals white, ovate to lanceolate, 2–3.5 mm, apex acuminate, hairs not barbed; stamens 5; anthers 3–5, globose; pseudostaminodes subulate, margins laciniate. Utricles included within tepals, sides exerted in mature fruit, greenish stramineous, obcordate, 1.3–1.7 mm, apex retuse. Seeds lenticular, 0.9–1.1 mm.
Phenology: Flowering summer–early fall.
Habitat: Wet disturbed areas
Elevation: 0-20 m
Distribution
Introduced; Ala., Fla., Ga., La., Mexico, West Indies, Central America (Belize, Costa Rica, Guatemala, Nicaragua, Panama), South America, Africa, Asia.
Discussion
Alternanthera sessilis is reported from Maryland, Mississippi, South Carolina, and Texas, but I have seen no specimens from these states.
Selected References
None.