Senecio lemmonii |
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Lemmon's groundsel, Lemmon's ragwort |
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Habit | Subshrubs (monocarpic?), (10–)20–100 cm (taproots woody). |
Herbage | glabrous or with tufts of white hairs in leaf axils. |
Stems | usually 1 (branching distally, unevenly reddish, usually somewhat lax). |
Leaves | evenly distributed; petiolate (proximal) or sessile; blades lanceolate to lance-linear, 3–10+ × (0.5–)1–2 cm, bases tapered (or auriculate), margins (sometimes revolute) unevenly dentate to subentire (mid and distal leaves similar, smaller, bases expanded, ± truncate to cordate, clasping). |
Ray florets | usually ± 8 or ± 13, rarely 0; corolla laminae 8–10 mm. |
Phyllaries | ± 21, (4–)5–8 mm, tips often with minute black dots. |
Calyculi | of 3–5+ linear to subulate bractlets (to 1.5 mm). |
Heads | 4–12 in loose, corymbiform arrays. |
Cypselae | hairy. |
Senecio lemmonii |
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Phenology | Flowering late winter–early summer. |
Habitat | Rocky sites in deserts |
Elevation | 500–1000 m (1600–3300 ft) |
Distribution |
AZ; Mexico
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Discussion | Some young or depauperate specimens of Senecio lemmonii from northern Mexico resemble S. californicus, which occurs farther to the west in California and Baja California. Whether or not there is a relationship between the two is undetermined. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 568. |
Parent taxa | |
Sibling taxa | |
Synonyms | S. decorticans |
Name authority | A. Gray: Proc. Amer. Acad. Arts 17: 220. (1882) |
Web links |