Difference between revisions of "Vernonia texana"
Fl. S.E. U.S., 1338. 1903.
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|tribe=Asteraceae tribe Vernonieae | |tribe=Asteraceae tribe Vernonieae | ||
|genus=Vernonia | |genus=Vernonia | ||
Revision as of 16:10, 18 September 2019
Plants 4–8(–10+) dm. Stems puberulent, glabrescent. Leaves basal and cauline; blades ovate-lanceolate (basal) to narrowly lanceolate (distal), 5–12+ cm × (5–)12–25+ mm, l/w = 3–5 (basal) or 8–17 (distal), abaxially glabrate (pitted, awl-shaped hairs in pits), adaxially puberulent and/or scabrellous. Heads in open, paniculiform-scorpioid arrays. Peduncles 1–35 mm. Involucres ± obconic to hemispheric, 4.5–6 × 5–7 mm. Phyllaries 35–45+ in 5–6+ series, glabrescent, margins arachno-ciliolate, the outer lance-deltate, 1–32 mm, inner oblong to linear, 4–5(–6) mm, tips acute or rounded-apiculate. Florets 12–24+. Cypselae 2–3 mm; pappi usually whitish to stramineous (rarely purplish), outer scales or bristles 20+, 0.3–1+ mm, contrasting or intergrading with 20+, 6–7+ mm inner subulate scales or bristles. 2n = 34.
Phenology: Flowering Jun–Aug.
Habitat: Pinelands, scrub oak woodlands, sandy or sandy-clay soils
Elevation: 60–200 m
Distribution
Ark., La., Miss., Okla., Tex.
Discussion
Selected References
None.