Packera greenei |
Packera streptanthifolia |
|
---|---|---|
flame ragwort |
cleft-leaf groundsel, Rocky Mountain butterweed, Rocky Mountain groundsel |
|
Habit | Perennials, 20–30+ cm; rhizomatous (rhizomes horizontal to erect, not branched), sometimes stoloniferous. | Perennials, 10–50+ cm; fibrous-rooted (caudices weak to stout, horizontal to suberect). |
Stems | 1, irregularly lanate or tomentose. |
1 or 2–5, clustered, usually glabrous, sometimes sparsely floccose-tomentose proximally and in leaf axils. |
Basal leaves | (and proximal cauline) petiolate; blades orbiculate, ovate, oblanceolate, or rhombic, 20–50+ × 20–40+ mm, bases tapering, sometimes obtuse, margins coarsely dentate to crenate-dentate. |
(and proximal cauline, relatively thick and turgid) petiolate; blades spatulate to oblanceolate, or ovate to orbiculate, 20–40+ × 10–30+ mm, bases tapering to abruptly contracted or subcordate, margins entire, crenate, dentate, or weakly lobulate (faces usually glabrous, sometimes hairy). |
Cauline leaves | gradually to abruptly reduced (petioles broad-winged, clasping, blades obovate, bases tapering, margins irregularly dentate; distal sessile, linear to lanceolate, entire). |
gradually to abruptly reduced (± petiolate or sessile; entire or subentire). |
Peduncles | bracteate, lanate or tomentose distally. |
bracteate, glabrous or sparsely tomentose. |
Ray florets | 8–10(–13); corolla laminae (red-orange) 8–15+ mm. |
8 or 13; corolla laminae 5–10 mm. |
Disc florets | 35–65+; corolla tubes 4–5 mm, limbs 5–6 mm. |
35–60+; corolla tubes 2–4 mm, limbs 2.5–4 mm. |
Phyllaries | 21, green (tips sometimes deep red), 8–10+ mm, densely tomentose proximally, sparsely tomentose distally. |
(8–)13 or 21, green (tips sometimes cyanic), 4–7+ mm, glabrous. |
Calyculi | conspicuous. |
conspicuous. |
Heads | 1–3+. |
2–20+ in loose, corymbiform or subumbelliform arrays. |
Cypselae | 1.5–2.5 mm, glabrous; pappi 8–11 mm. |
1–2.5 mm, glabrous; pappi 3–6 mm. |
2n | = 40, 46, 92. |
= 46, 92. |
Packera greenei |
Packera streptanthifolia |
|
Phenology | Flowering mid May–early Jul. | Flowering late May–late Aug. |
Habitat | Dry, rocky, usually serpentine soils, open scrub-pine associations | Forests, open meadows, valleys, dry to damp and loamy soils |
Elevation | 100–1600 m (300–5200 ft) | 1000–3400 m (3300–11200 ft) |
Distribution |
CA
|
CA; CO; ID; MT; NM; NV; OR; UT; WA; WY; AB; BC; NT; SK; YT
|
Discussion | Of conservation concern. Packera greenei is known from Coast Ranges of northern California. It has relatively large heads and bright orange-red ray corollas; its leaves are usually cyanic abaxially. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Packera streptanthifolia is widespread and variable throughout the Western Cordillera. It includes weakly defined phases that have been treated as distinct species or as varieties. Characteristics used to delimit those taxa often overlap and are difficult to score; some “phases” grade into each other. Northern populations are sometimes segregated as a distinct taxon (e.g., Senecio streptanthifolia var. borealis; J. F. Bain 1988). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 588. | FNA vol. 20, p. 599. |
Parent taxa | Asteraceae > tribe Senecioneae > Packera | Asteraceae > tribe Senecioneae > Packera |
Sibling taxa | ||
Synonyms | Senecio greenei | Senecio streptanthifolius, P. streptanthifolia var. borealis, Senecio adamsii, Senecio aureus var. borealis, Senecio cognatus, Senecio cymbalarioides, Senecio cymbalarioides var. borealis, Senecio cymbalarioides var. streptanthifolius, Senecio fulgens, Senecio jonesii, Senecio leonardii, Senecio longipetiolatus, Senecio oödes, Senecio platylobus, Senecio rydbergii, Senecio streptanthifolius var. borealis, Senecio streptanthifolius var. kluanei, Senecio streptanthifolius var. laetiflorus, Senecio streptanthifolius var. oödes, Senecio streptanthifolius var. rubricaulis, Senecio streptanthifolius var. wallowensis, Senecio subcuneatus, Senecio suksdorfii, Senecio wardii |
Name authority | (A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 47. (1981) | (Greene) W. A. Weber & Á. Löve: Phytologia 49: 48. (1981) |
Web links |