Packera greenei |
Packera cymbalaria |
|
---|---|---|
flame ragwort |
dwarf arctic groundsel, dwarf arctic ragwort, northern butterweed |
|
Habit | Perennials, 20–30+ cm; rhizomatous (rhizomes horizontal to erect, not branched), sometimes stoloniferous. | Perennials, 6–25+ cm; rhizomatous (mat forming, rhizomes horizontal to suberect, branched). |
Stems | 1, irregularly lanate or tomentose. |
usually 1 (sometimes more, clustered), usually glabrous, sometimes bases and leaf axils tomentose. |
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. |
petiolate; blades ovate to obovate, lyrate, or reniform, 10–30+ × 10–25+ mm, bases cuneate (sometimes tapering to winged petioles) to subcordate or contracted, margins crenate, dentate, or weakly lobed. |
Cauline leaves | gradually to abruptly reduced (petioles broad-winged, clasping, blades obovate, bases tapering, margins irregularly dentate; distal sessile, linear to lanceolate, entire). |
abruptly reduced (sessile, not clasping; lanceolate, entire or pinnately lobed to pinnatisect). |
Peduncles | bracteate, lanate or tomentose distally. |
0 or relatively reduced (then densely tomentose). |
Ray florets | 8–10(–13); corolla laminae (red-orange) 8–15+ mm. |
0 or 11–13; corolla laminae (yellow, purple streaks in veins) 10–14+ mm. |
Disc florets | 35–65+; corolla tubes 4–5 mm, limbs 5–6 mm. |
60–75+; corolla tubes 2–2.5 mm, limbs 4–5 mm. |
Phyllaries | 21, green (tips sometimes deep red), 8–10+ mm, densely tomentose proximally, sparsely tomentose distally. |
21, deep red or green (tips red), 6–8 mm, glabrous. |
Calyculi | conspicuous. |
conspicuous (bractlets cyanic). |
Heads | 1–3+. |
1–2. |
Cypselae | 1.5–2.5 mm, glabrous; pappi 8–11 mm. |
1.5–2 mm, glabrous; pappi 5–6 mm. |
2n | = 40, 46, 92. |
= 46, 92, 138. |
Packera greenei |
Packera cymbalaria |
|
Phenology | Flowering mid May–early Jul. | Flowering mid Jun–early Aug. |
Habitat | Dry, rocky, usually serpentine soils, open scrub-pine associations | Exposed rocky slopes, tundra turf |
Elevation | 100–1600 m (300–5200 ft) | 0–1900 m (0–6200 ft) |
Distribution |
CA
|
AK; AB; BC; NF; NT; QC; 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 cymbalaria occurs in three, disjunct regions: western Alaska eastward into western N.W.T. and south into northwestern British Columbia; Newfoundland and the Gaspé Peninsula, Quebec; and Siberia. Considerable morphologic overlap exists between western and eastern populations in North America; western populations have slightly different flavonoid chemistries and chromosome numbers. Western populations are either diploid or tetraploid; eastern populations are hexaploid. The correct name for this species may prove to be Packera heterophylla (Fischer) E. Wiebe, based on Cineraria heterophylla Fischer. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 588. | FNA vol. 20, p. 583. |
Parent taxa | Asteraceae > tribe Senecioneae > Packera | Asteraceae > tribe Senecioneae > Packera |
Sibling taxa | ||
Synonyms | Senecio greenei | Senecio cymbalaria, Cineraria lyrata, P. resedifolia, S. fernaldii, S. resedifolius |
Name authority | (A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 47. (1981) | (Pursh) W. A. Weber & Á. Löve: Bot. Not. 128: 497. (1976) |
Web links |