Difference between revisions of "Vernonia acaulis"
Bull. New York Bot. Gard. 4: 222. 1906.
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|tribe=Asteraceae tribe Vernonieae | |tribe=Asteraceae tribe Vernonieae | ||
|genus=Vernonia | |genus=Vernonia | ||
Revision as of 20:16, 16 December 2019
Plants 4–6(–10) dm. Stems ± puberulent, glabrescent. Leaves mostly basal; blades oblong-elliptic to spatulate (basal, the distal narrower), 11–25(–30) cm × (21–)60–75+ mm, l/w = 2–4(–5+), abaxially usually glabrous or glabrate, sometimes hirsutulous on veins, usually resin-gland-dotted, adaxially ± scabrellous or glabrate. Heads in loose, corymbiform arrays. Peduncles 5–50 mm. Involucres campanulate to hemispheric, 5–10 × 6–7 mm. Phyllaries 40–60 in 5–6 series, glabrate, margins ciliolate, the outer lance-linear, 2–4 mm, inner lance-ovate to lance-subulate, 5–9 mm, tips subulate to filiform. Florets 30–40(–55+). Cypselae 2.5–3+ mm; pappi whitish to stramineous, outer scales ca. 20, 0.6–1 mm, contrasting with 25–40, 5–7+ mm inner bristles. 2n = 34.
Phenology: Flowering Jul–Aug.
Habitat: Open woods, pine savannas, bogs, disturbed places
Elevation: 10–300 m
Distribution
Fla., Ga., N.C., S.C.
Discussion
Selected References
None.