Senecio arizonicus

Perennials, (20–) 30–40 (–60) cm (rhizomes suberect or weakly spreading). Herbage lanate-arachnose or tomentose, unevenly glabrescent. Stems 1 (–2). Leaves (often purplish abaxially) reduced distally; petiolate; blades ovate to subelliptic, (5–) 6–10 (–15) × (2.5–) 3–5 (–9) cm, bases tapered or contracted, margins subentire to denticulate (denticles callous; mid and distal leaves bractlike). Heads (2–) 5–12 (–20) in corymbiform arrays. Calyculi of 2–5+ bractlets (largest to 3 mm). Phyllaries (± 13) ± 21, 5–7 mm, tips green. Ray-florets ± 13; corolla laminae 5–10 mm. Cypselae hairy (especially on angles). 2n = 40.

Phenology: Flowering late spring–summer.
Habitat: Openings in pine-oak woodlands
Elevation: 1600–2100 m

Ariz.

Discussion

Senecio arizonicus is reputedly in southern New Mexico (W. C. Martin and C. R. Hutchins 1980); that seems unlikely and should be checked.

Selected References

None.

Lower Taxa