Difference between revisions of "Gamochaeta coarctata"
Lejeunia 120: 104. 1987.
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|common_names=Elegant cudweed | |common_names=Elegant cudweed | ||
| + | |special_status={{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=Gnaphalium coarctatum | |name=Gnaphalium coarctatum | ||
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|elevation=0–150 m | |elevation=0–150 m | ||
|distribution=Ala.;Ark.;Calif.;Fla.;Ga.;La.;Miss.;N.C.;S.C.;Tex.;Va.;South America;also introduced in Mexico;West Indies;Europe;Asia;Pacific Islands (New Zealand);Australia. | |distribution=Ala.;Ark.;Calif.;Fla.;Ga.;La.;Miss.;N.C.;S.C.;Tex.;Va.;South America;also introduced in Mexico;West Indies;Europe;Asia;Pacific Islands (New Zealand);Australia. | ||
| + | |introduced=true | ||
|discussion=<p><i>Gamochaeta coarctata</i> is native to South America and is also introduced in Mexico. R. K. Godfrey (1958) identified specimens of <i>G. coarctata</i> as <i>Gnaphalium</i> spicatum Lamarck. Some specimens from the flora area were misidentified by G. L. Nesom (1990f) as <i>Gamochaeta</i> americana (Miller) Weddell, which was described from Jamaica; it is widespread in Central America and Mexico, and has not been observed in the flora area.</p> | |discussion=<p><i>Gamochaeta coarctata</i> is native to South America and is also introduced in Mexico. R. K. Godfrey (1958) identified specimens of <i>G. coarctata</i> as <i>Gnaphalium</i> spicatum Lamarck. Some specimens from the flora area were misidentified by G. L. Nesom (1990f) as <i>Gamochaeta</i> americana (Miller) Weddell, which was described from Jamaica; it is widespread in Central America and Mexico, and has not been observed in the flora area.</p> | ||
|tables= | |tables= | ||
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|publication title=Lejeunia | |publication title=Lejeunia | ||
|publication year=1987 | |publication year=1987 | ||
| − | |special status= | + | |special status=Introduced;Illustrated |
| − | |source xml=https:// | + | |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V19_718.xml |
|tribe=Asteraceae tribe Gnaphalieae | |tribe=Asteraceae tribe Gnaphalieae | ||
|genus=Gamochaeta | |genus=Gamochaeta | ||
Revision as of 20:40, 27 May 2020
Winter annuals or biennials, 15–35(–50) cm; fibrous-rooted. Stems decumbent-ascending, white-pannose (tomentum usually sheath-like). Leaves basal and cauline, basal present (in rosettes) at flowering, blades spatulate to oblanceolate-obovate, (1.5–)3–8(–12) cm × 6–15(–22) mm (gradually or little smaller distally, slightly succulent, margins often crenulate on drying), faces bicolor, abaxial closely white-pannose, adaxial glabrous or glabrate. Heads initially usually in dense, continuous spiciform arrays 2–20 cm × 10–14 mm (pressed), later branched, interrupted. Involucres cylindro-campanulate, 2.5–3 mm, bases glabrous. Phyllaries in 4–5 series, outer (purplish or rosy) elliptic-obovate to broadly ovate-elliptic, lengths 1/3–1/4 inner, apices rounded to obtuse, inner oblong, laminae brown-hyaline, apices rounded to obtuse or blunt, apiculate. Florets: bisexual 2–3; all corollas usually purplish distally. Cypselae (tan) 0.5–0.6 mm. 2n = 28, 40.
Phenology: Flowering Apr–Jun.
Habitat: Ditches, low roadsides, sidewalk cracks, shaded spots around buildings, other shaded, moist habitats
Elevation: 0–150 m
Distribution
Introduced; Ala., Ark., Calif., Fla., Ga., La., Miss., N.C., S.C., Tex., Va., South America, also introduced in Mexico, West Indies, Europe, Asia, Pacific Islands (New Zealand), Australia.
Discussion
Gamochaeta coarctata is native to South America and is also introduced in Mexico. R. K. Godfrey (1958) identified specimens of G. coarctata as Gnaphalium spicatum Lamarck. Some specimens from the flora area were misidentified by G. L. Nesom (1990f) as Gamochaeta americana (Miller) Weddell, which was described from Jamaica; it is widespread in Central America and Mexico, and has not been observed in the flora area.
Selected References
None.