Difference between revisions of "Cyanthillium"
Bijdr. Fl. Ned. Ind., 889. 1826.
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|distribution=Fla.;probably paleotropical in origin;now widely established in tropical and warm-temperate regions as naturalized ruderals. | |distribution=Fla.;probably paleotropical in origin;now widely established in tropical and warm-temperate regions as naturalized ruderals. | ||
| + | |introduced=true | ||
|discussion=<p>Species 1–2 (1 in the flora).</p> | |discussion=<p>Species 1–2 (1 in the flora).</p> | ||
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|publication year=1826 | |publication year=1826 | ||
|special status= | |special status= | ||
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|tribe=Asteraceae tribe Vernonieae | |tribe=Asteraceae tribe Vernonieae | ||
|genus=Cyanthillium | |genus=Cyanthillium | ||
Latest revision as of 19:50, 5 November 2020
Annuals (perhaps persisting), 2–6(–12+) dm. Leaves mostly cauline (at flowering); petioles ± winged; blades ovate to trullate, deltate, oblanceolate, or spatulate, bases ± cuneate, margins serrate, apices rounded to acute, abaxial faces ± hirtellous to densely piloso-strigillose, resin-gland-dotted, adaxial faces ± scabrellous or glabrate. Heads discoid, ± pedunculate, not subtended by foliaceous bracts, (12–)40–100+ in ± corymbiform arrays (6–)10–15+ cm diam. Involucres ± campanulate to turbinate or hemispheric, 4–5 mm diam. Phyllaries 24–32+ in 3–4+ series, the outer subulate to lanceolate, inner ± lanceolate, all ± chartaceous, margins entire, tips apiculate to spinose, abaxial faces ± strigillose, ± resin-gland-dotted. Florets 13–20(–24+); corollas lavender to pink or purplish, tubes longer than funnelform throats, lobes 5, lance-linear, ± equal. Cypselae ± columnar, not ribbed, ± strigillose; pappi of ± 20 ± persistent outer scales, plus ± 20 caducous inner bristles. x = 9 (18?).
Distribution
Introduced; Fla., probably paleotropical in origin, now widely established in tropical and warm-temperate regions as naturalized ruderals.
Discussion
Species 1–2 (1 in the flora).
Selected References
None.