Senecio crassulus |
Senecio taraxacoides |
|
---|---|---|
mountain meadow butterweed, thick-leaf groundsel, thick-leaf ragwort |
dandelion ragwort |
|
Habit | Perennials, (15–)20–50(–70) cm (rhizomes branched, ± woody). | Perennials, 5–10(–14) cm (caudices branched, fibrous-rooted). |
Herbage | glabrous. |
(sometimes purple-tinged) floccose-tomentose (persistently on abaxial faces of leaves, glabrescent elsewhere). |
Stems | 1–(2–4). |
single or loosely clustered. |
Leaves | (thickish-turgid) progressively reduced distally; petiolate; blades broadly lanceolate to subelliptic, 2.5–15 × 1–5 cm, bases tapered, margins sharply dentate to subentire (some teeth callous; mid leaves sometimes larger than proximal; distal leaves sessile, smaller, often clasping). |
± evenly distributed; petiolate; blades oblanceolate to ovate, (1–)2–6 × 1–2.5 cm, bases tapered, margins dentate or incised to subpinnatifid (distal leaves bractlike). |
Ray florets | ± 8 or ± 13; corolla laminae 5–12 mm. |
usually ± 13, sometimes fewer or 0; corolla laminae 8–12 mm. |
Phyllaries | (± 8) ± 13 or ± 21, 5–9 mm, tips black (villous). |
± 13 or ± 21, 7–10 mm, tips green. |
Calyculi | of (1–)3–6 linear to filiform bractlets (lengths to 1/3 phyllaries). |
of 2–5 lance-linear bractlets (lengths 1/3–2/3 phyllaries). |
Heads | (1–)4–12 in corymbiform arrays. |
1(–5). |
Cypselae | glabrous. |
glabrous. |
2n | = 40. |
= 40. |
Senecio crassulus |
Senecio taraxacoides |
|
Phenology | Flowering summer. | Late summer. |
Habitat | Moist to drying hillsides, meadows, other open places in forest associations | Alpine peaks |
Elevation | 2200–3700 m (7200–12100 ft) | 3500–4000 m (11500–13100 ft) |
Distribution |
CO; ID; MT; NM; NV; OR; SD; UT; WY
|
CO; NM |
Source | FNA vol. 20, p. 551. | FNA vol. 20, p. 551. |
Parent taxa | Asteraceae > tribe Senecioneae > Senecio | Asteraceae > tribe Senecioneae > Senecio |
Sibling taxa | ||
Synonyms | S. lapathifolius, S. semiamplexicaulis | S. amplectens var. taraxacoides, Ligularia taraxacoides |
Name authority | A. Gray: Proc. Amer. Acad. Arts 19: 54. (1883) | (A. Gray) Greene: Pittonia 4: 119. (1900) |
Web links |