Packera neomexicana |
Packera bolanderi |
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New Mexico groundsel |
Bolander's groundsel, Bolander's 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, 20–50+ cm; fibrous-rooted (caudices creeping). | ||||||||||||
Stems | 1 or 2–5+, clustered, lanate- or arachno-tomentose or glabrescent. |
1 or 2–3, loosely clustered, glabrous. |
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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 to oblong, or lyrate (lateral lobes 1–3 pairs, sinuses usually rounded, midribs usually winged), 50–120+ × 30–70+ mm, bases cordate to subcordate, margins shallowly to deeply incised. |
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Cauline leaves | gradually or abruptly reduced (proximal petiolate, similar to basals; mids and distals sessile, lanceolate, entire). |
gradually reduced (petiolate or sessile and clasping; lanceolate, incised). |
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Peduncles | conspicuously bracteate, usually hairy. |
ebracteate or inconspicuously bracteate, glabrous. |
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Ray florets | (5–)8 or 13; corolla laminae 4–10 mm. |
8 or 13; corolla laminae 10–15+ mm. |
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Disc florets | 40–60+; corolla tubes 1.5–2.5 mm, limbs 3.5–4.5 mm. |
30–45+; corolla tubes 3–4 mm, limbs 3.5–4.5 mm. |
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Phyllaries | 13 or 21, green or yellowish, 4–7+ mm, tomentose to glabrescent. |
(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally. |
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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). |
8–15+ in corymbiform or subumbelliform arrays. |
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Cypselae | 1.5–2.5 mm, usually hirtellous on ribs, sometimes glabrous; pappi 5–6+ mm. |
2.5–3.5 mm, glabrous; pappi 5–7 mm. |
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2n | = 44, 46, 92. |
= 46. |
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Packera neomexicana |
Packera bolanderi |
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Distribution |
AZ; CO; NM; UT; w Mexico
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CA; OR; WA
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Discussion | Varieties 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (2 in the flora). The two varieties of Packera bolanderi have been treated as species. The morphologic characteristics used to distinguish the varieties vary widely within some populations. Presence or absence of multicellular hairs has been used to separate the varieties; that trait is also variable. The morphologic distinction is weak; habitat and elevation records lend support for recognizing two varieties. (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. 579. | ||||||||||||
Parent taxa | Asteraceae > tribe Senecioneae > Packera | Asteraceae > tribe Senecioneae > Packera | ||||||||||||
Sibling taxa | ||||||||||||||
Subordinate taxa | ||||||||||||||
Synonyms | Senecio neomexicanus | Senecio bolanderi | ||||||||||||
Name authority | (A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 47. (1981) | (A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 45. (1981) | ||||||||||||
Web links |