Packera neomexicana |
Packera greenei |
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New Mexico groundsel |
flame ragwort |
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Habit | Perennials, biennials, or annuals, 20–50+ cm; fibrous-rooted, taprooted, or ± rhizomatous (bases branched, horizontal or ascending to erect). | Perennials, 20–30+ cm; rhizomatous (rhizomes horizontal to erect, not branched), sometimes stoloniferous. | ||||||||
Stems | 1 or 2–5+, clustered, lanate- or arachno-tomentose or glabrescent. |
1, irregularly lanate or tomentose. |
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Basal leaves | (often abaxially cyanic) petiolate (petioles hairy to glabrate); blades ovate to lanceolate or narrowly lanceolate, 20–60+ × 10–30+ mm, bases abruptly contracted to tapering, margins subentire or denticulate to subserrate (abaxial faces usually tomentose, adaxials frequently glabrate). |
(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. |
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Cauline leaves | gradually or abruptly reduced (proximal petiolate, similar to basals; mids and distals sessile, lanceolate, entire). |
gradually to abruptly reduced (petioles broad-winged, clasping, blades obovate, bases tapering, margins irregularly dentate; distal sessile, linear to lanceolate, entire). |
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Peduncles | conspicuously bracteate, usually hairy. |
bracteate, lanate or tomentose distally. |
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Ray florets | (5–)8 or 13; corolla laminae 4–10 mm. |
8–10(–13); corolla laminae (red-orange) 8–15+ mm. |
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Disc florets | 40–60+; corolla tubes 1.5–2.5 mm, limbs 3.5–4.5 mm. |
35–65+; corolla tubes 4–5 mm, limbs 5–6 mm. |
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Phyllaries | 13 or 21, green or yellowish, 4–7+ mm, tomentose to glabrescent. |
21, green (tips sometimes deep red), 8–10+ mm, densely tomentose proximally, sparsely tomentose distally. |
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Calyculi | conspicuous. |
conspicuous. |
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Heads | 3–20+ in open or compact, corymbiform to subumbelliform arrays (subtended by smaller arrays arising from leaf axils). |
1–3+. |
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Cypselae | 1.5–2.5 mm, usually hirtellous on ribs, sometimes glabrous; pappi 5–6+ mm. |
1.5–2.5 mm, glabrous; pappi 8–11 mm. |
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2n | = 44, 46, 92. |
= 40, 46, 92. |
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Packera neomexicana |
Packera greenei |
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Phenology | Flowering mid May–early Jul. | |||||||||
Habitat | Dry, rocky, usually serpentine soils, open scrub-pine associations | |||||||||
Elevation | 100–1600 m (300–5200 ft) | |||||||||
Distribution |
AZ; CO; NM; UT; w Mexico
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CA
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Discussion | Varieties 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
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Key |
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Source | FNA vol. 20, p. 593. | FNA vol. 20, p. 588. | ||||||||
Parent taxa | Asteraceae > tribe Senecioneae > Packera | Asteraceae > tribe Senecioneae > Packera | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Senecio neomexicanus | Senecio greenei | ||||||||
Name authority | (A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 47. (1981) | (A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 47. (1981) | ||||||||
Web links |