Difference between revisions of "Alternanthera flavescens"
in A. von Humboldt et al., Nov. Gen. Sp. 2: 207. 1818.
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|common_names=Yellow joyweed | |common_names=Yellow joyweed | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=I | ||
| + | |label=Introduced | ||
| + | }} | ||
|basionyms= | |basionyms= | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
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|elevation=0 m | |elevation=0 m | ||
|distribution=Fla.;Mexico;West Indies;South America. | |distribution=Fla.;Mexico;West Indies;South America. | ||
| + | |introduced=true | ||
|discussion=<p><i>Alternanthera flavescens</i> has long been known as <i>A. ramosissima</i> (Martius) Standley.</p> | |discussion=<p><i>Alternanthera flavescens</i> has long been known as <i>A. ramosissima</i> (Martius) Standley.</p> | ||
|tables= | |tables= | ||
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|publication title=in A. von Humboldt et al., Nov. Gen. Sp. | |publication title=in A. von Humboldt et al., Nov. Gen. Sp. | ||
|publication year=1818 | |publication year=1818 | ||
| − | |special status= | + | |special status=Introduced |
| − | |source xml=https:// | + | |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V4/V4_879.xml |
|genus=Alternanthera | |genus=Alternanthera | ||
|species=Alternanthera flavescens | |species=Alternanthera flavescens | ||
Revision as of 00:20, 28 May 2020
Herbs, perennial, 6–15 dm. Stems ascending to spreading, often clambering, pubescent, glabrate. Leaves sessile; blade ovate to lanceolate or elliptic, 1.8–8 × 0.5–3 cm, herbaceous, apex long-acuminate or acute, sparsely strigose or glabrous. Inflorescences terminal and axillary, pedunculate; heads yellowish white, subglobose to cylindric, 0.9–2.5(–4) × 0.9–1 cm; bracts keeled, less than 1/2 as long as tepals. Flowers: tepals monomorphic, green, lanceolate, 3.4–4.7 mm, apex acute, villous, hairs not barbed; stamens 5; pseudostaminodes ligulate, margins laciniate. Utricles included within tepals, greenish yellow, ellipsoid, 2.5 mm, apex acute. Seeds ovoid, 1.2–1.3 mm.
Phenology: Flowering year-round.
Habitat: Coastal hammocks, thickets, sand bars
Elevation: 0 m
Distribution
Introduced; Fla., Mexico, West Indies, South America.
Discussion
Alternanthera flavescens has long been known as A. ramosissima (Martius) Standley.
Selected References
None.