Senecio lugens

Richardson

in J. Franklin et al., Narr. Journey Polar Sea, 748. 1823.

IllustratedEndemic
Synonyms: Senecio glaucescens Rydberg Senecio imbricatus Greene Senecio integerrimus var. lugens (Richardson) B. Boivin
Treatment appears in FNA Volume 20. Treatment on page 554. Mentioned on page 547.

Perennials, (10–)20–35(–50) cm (rhizomes suberect to creeping). Herbage loosely, often unevenly, floccose-tomentose, glabrescent. Stems single or clustered. Leaves reduced distally; petiolate; blades narrowly obovate to oblanceolate, (4–)8–18(–25) cm, bases tapered, margins subentire to dentate (denticles callous; mid and distal leaves bractlike, clasping). Heads (2–)7–12(–20+) in corymbiform arrays. Calyculi of 2–5 linear bractlets (1–2 mm). Phyllaries (± 8) ± 13 (± 21), 4–7 mm, tips black. Ray florets (± 5) ± 8 (± 13); corolla laminae 8–10(–15) mm. Cypselae glabrous. 2n = 40, 80.


Phenology: Flowering summer.
Habitat: Moist meadows, gravelly streambeds, open woods in alpine or boreal sites
Elevation: 200–2500 m

Distribution

V20-1225-distribution-map.gif

Alta., B.C., N.W.T., Yukon, Alaska, Mont., Wash., Wyo.

Discussion

Senecio lugens varies greatly in robustness across its range. It is scattered widely in the Rocky Mountain uplift and adjacent regions from northern Wyoming to Alaska; it is disjunct in the Olympic Peninsula, Washington. Superficially similar to S. integerrimus, S. lugens has well-developed, coarse, spreading rootstocks with branching roots; S. integerrimus arises from foreshortened, buttonlike caudices with abundant unbranched, fleshy-fibrous roots.

Selected References

None.

Lower Taxa

None.
... more about "Senecio lugens"
Theodore M. Barkley† +
Richardson +
Alta. +, B.C. +, N.W.T. +, Yukon +, Alaska +, Mont. +, Wash. +  and Wyo. +
200–2500 m +
Moist meadows, gravelly streambeds, open woods in alpine or boreal sites +
Flowering summer. +
in J. Franklin et al., Narr. Journey Polar Sea, +
Illustrated +  and Endemic +
Senecio glaucescens +, Senecio imbricatus +  and Senecio integerrimus var. lugens +
Senecio lugens +
species +