Verbesina longifolia
Proc. Amer. Acad. Arts 19: 12. 1883.
Plants 60–150+ cm (perennating bases ± erect, internodes not winged). Leaves all or mostly opposite (distal sometimes alternate); blades ± lance-linear (lengths 10–15 times widths), 9–12 (–20+) × 0.6–1.2 (–1.5+) cm, bases rounded, margins obscurely toothed to subentire, apices ± attenuate, faces ± scabrellous. Heads borne singly or 3–5+ in loose, corymbiform arrays. Involucres ± hemispheric to saucerlike, 11–15+ mm diam. Phyllaries 18–24+ in 2–3 series, ± erect to spreading, linear to lance-linear, 5–15+ mm. Ray-florets 12–13; laminae 15–25+ mm. Disc-florets 60–100+; corollas yellow. Cypselae dark-brown, oblanceolate to elliptic, 7 mm, faces glabrous; pappi 0–0.5 mm. 2n = 34.
Phenology: Flowering (Jul–)Sep–Oct.
Habitat: Rocky slopes
Elevation: 1500–2400 m
Distribution
Ariz., N.Mex., Mexico (Chihuahua), Mexico (Durango)
Discussion
Selected References
None.
Lower Taxa
"broader" is not a number.