Vernonia marginata
Atlantic J. 1: 146. 1832.
Plants 3–5 (–8+) dm. Stems puberulent, glabrescent. Leaves mostly cauline; blades narrowly lanceolate to lance-linear, 5–15+ cm × (2.5–) 8–12+ mm, l/w = 8–20 (–30+), abaxially glabrate (pitted, awl-shaped hairs in pits), adaxially puberulent, glabrescent (sometimes pitted). Heads in corymbiform arrays. Peduncles (3–) 10–35 mm. Involucres narrowly campanulate, (7–) 9–11 × 5–6 mm. Phyllaries 35–40+ in 5–6+ series, glabrescent, margins arachno-ciliolate, the outer lanceovate, 1–2 mm, inner oblong to linear-oblong, 6–9+ mm, tips ± acuminate. Florets 10–25+. Cypselae 4–5 mm; pappi stramineous to purplish, outer subulate scales or bristles 30+, 0.6–2+ mm, intergrading with 40+, 8–9+ mm inner subulate scales or bristles. 2n = 34.
Phenology: Flowering Jul–Aug.
Habitat: Ditches, sandy flats, stream banks
Elevation: 600–2000 m
Distribution
Colo., Kans., N.Mex., Okla., Tex., Mexico (Coahuila)
Discussion
Selected References
None.
Lower Taxa
"dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.