Difference between revisions of "Elephantopus"
Sp. Pl. 2: 814. 1753.
Gen. Pl. ed. 5, 355. 1754.
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--><p><i>Pseudelephantopus spicatus</i> is sometimes treated as a member of <i>Elephantopus</i>.</p> | --><p><i>Pseudelephantopus spicatus</i> is sometimes treated as a member of <i>Elephantopus</i>.</p> | ||
|tables= | |tables= | ||
| − | |references= | + | |references={{Treatment/Reference |
| + | |id=clonts1972a | ||
| + | |text=Clonts, J. A. 1972. A Revision of the Genus Elephantopus Including Orthopappus and Pseudelephantopus (Compositae). Ph.D. thesis. Mississippi State University. | ||
| + | }} | ||
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|family=Asteraceae | |family=Asteraceae | ||
|distribution=Mostly warm-temperate;subtropical;and tropical regions worldwide;sometimes as naturalized ruderals. | |distribution=Mostly warm-temperate;subtropical;and tropical regions worldwide;sometimes as naturalized ruderals. | ||
| − | |reference= | + | |reference=clonts1972a |
|publication title=Sp. Pl.;Gen. Pl. ed. | |publication title=Sp. Pl.;Gen. Pl. ed. | ||
|publication year=1753;1754 | |publication year=1753;1754 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V19_239.xml |
|tribe=Asteraceae tribe Vernonieae | |tribe=Asteraceae tribe Vernonieae | ||
|genus=Elephantopus | |genus=Elephantopus | ||
Latest revision as of 19:50, 5 November 2020
Perennials, (1–)2–8(–12+) dm; often rhizomatous or stoloniferous. Leaves mostly basal or mostly cauline at flowering; sessile or petiolate, petioles ± winged (often clasping at bases); blades mostly elliptic, ovate, or obovate to lanceolate, oblanceolate, or spatulate (rarely orbiculate), bases ± cuneate, margins usually toothed (rarely entire), apices obtuse to acute, abaxial or both faces usually resin-gland-dotted. Heads ± discoid, sessile, not individually bracteate, in clusters of (1–)10–40+ in corymbiform-paniculiform arrays 6–15(–25) cm diam. (each cluster subtended by 2–3 ± deltate bracts). Involucres ± cylindric, 1–3+ mm diam. Phyllaries 8 in 4 decussate pairs, the outer 4 ovate, inner 4 lanceolate, all ± chartaceous, margins entire, tips ± spinose to apiculate, abaxial faces of inner 4 usually dotted distally with resin glands. Florets (1–)4(–5+); corollas white or pink to purple, tubes longer than abruptly funnelform throats, lobes 5, lance-linear, unequal (abaxial sinus deepest). Cypselae ± clavate, sometimes ± flattened, 10-nerved or -ribbed, strigillose to hirsutulous; pappi persistent, of 5(–6), 1-aristate scales (look closely for squamiform, gradually to abruptly tapering base of each arista). x = 11.
Distribution
Mostly warm-temperate, subtropical, and tropical regions worldwide, sometimes as naturalized ruderals.
Discussion
Species 12–15+ (4 in the flora).
Pseudelephantopus spicatus is sometimes treated as a member of Elephantopus.
Selected References
Lower Taxa
Key
| 1 | Leaves at flowering all or mostly cauline | Elephantopus carolinianus |
| 1 | Leaves at flowering mostly basal (cauline leaves much smaller or wanting) | > 2 |
| 2 | Inner phyllaries 9–11+ mm; pappi 6–8 mm | Elephantopus tomentosus |
| 2 | Inner phyllaries 6–8 mm; pappi 3–4.5 mm | > 3 |
| 3 | Inner phyllaries ± densely strigose-villous with hairs (0.3–)0.5–1 mm; cypselae 3– 3.5 mm | Elephantopus elatus |
| 3 | Inner phyllaries sparsely strigose or hispidulous with hairs 0.05–0.3(–0.5) mm; cypselae 2.5–3 mm | Elephantopus nudatus |