Difference between revisions of "Vernonia lettermannii"
Notes Compositae, 78. 1880.
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|publication year=1880 | |publication year=1880 | ||
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|tribe=Asteraceae tribe Vernonieae | |tribe=Asteraceae tribe Vernonieae | ||
|genus=Vernonia | |genus=Vernonia | ||
Latest revision as of 19:50, 5 November 2020
Plants (2–)5–6+ dm. Stems glabrous or glabrate. Leaves mostly cauline; blades filiform, 5–9+ cm × 1–3+ mm, l/w = 25–50+, abaxially glabrate (pitted, awl-shaped hairs in pits), adaxially puberulent, glabrescent (sometimes pitted). Heads in corymbiform arrays. Peduncles 6–20+ mm. Involucres narrowly campanulate, 7–9(–10+) × 4–5+ mm. Phyllaries 30–40+ in 5–6+ series, sparsely tomentose, glabrescent, margins arachno-ciliolate, the outer lanceolate to subulate, 1–3 mm, inner oblong to lanceolate, 5–7+ mm, tips acute. Florets 10–12+. Cypselae 3–4 mm; pappi fuscous to purplish, outer scales 25+, 0.1–0.5 mm, contrasting with 35+, 6–7+ mm inner bristles. 2n = 34.
Phenology: Flowering Jul–Aug.
Habitat: Flood plains, terraces
Elevation: 100–200 m
Discussion
Selected References
None.
Lower Taxa
None.