Senecio sphaerocephalus

Greene

Pittonia 3: 106. 1896.

Endemic
Synonyms: Senecio altus Rydberg Senecio latus Rydberg Senecio lugens var. hookeri D. C. Eaton
Treatment appears in FNA Volume 20. Treatment on page 555. Mentioned on page 547, 558.
Revision as of 20:44, 27 May 2020 by imported>Volume Importer

Perennials, (30–)40–80 cm (rhizomes stout). Herbage tomentose, unevenly glabrescent. Stems single. Leaves reduced distally; petiolate; blades oblanceolate to elliptic, 4–12× 1–4 cm, bases tapered, margins weakly dentate or denticulate (denticles callous; mid leaves similar, smaller; distal leaves bractlike). Heads (3–)5–24 in corymbiform arrays. Calyculi of 1–5 bractlets (longest 2–3 mm). Phyllaries (± 13) ± 21, 3–7 mm, tips black or brownish. Ray florets ± 13; corolla laminae 6–10 mm. Cypselae usually hairy, sometimes glabrous. 2n = 40.


Phenology: Flowering spring–early summer.
Habitat: Open meadows, especially in coniferous associations
Elevation: 1000–1800 m

Distribution

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Idaho, Mont., Nev., Oreg., Utah, Wyo.

Discussion

Selected References

None.

Lower Taxa

None.