Packera neomexicana |
Packera neomexicana var. toumeyi |
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New Mexico groundsel |
Toumey's groundsel |
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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, densely lanate or woolly, rhizomatous (rhizomes creeping) or fibrous-rooted (caudices suberect). | ||||||||
Stems | 1 or 2–5+, clustered, lanate- or arachno-tomentose or glabrescent. |
1 (scapiform). |
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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). |
blades ovate to obovate, margins irregularly dentate. |
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Cauline leaves | gradually or abruptly reduced (proximal petiolate, similar to basals; mids and distals sessile, lanceolate, entire). |
inconspicuous (abruptly reduced, bractlike). |
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Peduncles | conspicuously bracteate, usually hairy. |
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Ray florets | (5–)8 or 13; corolla laminae 4–10 mm. |
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Disc florets | 40–60+; corolla tubes 1.5–2.5 mm, limbs 3.5–4.5 mm. |
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Phyllaries | 13 or 21, green or yellowish, 4–7+ mm, tomentose to glabrescent. |
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Calyculi | conspicuous. |
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Heads | 3–20+ in open or compact, corymbiform to subumbelliform arrays (subtended by smaller arrays arising from leaf axils). |
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Cypselae | 1.5–2.5 mm, usually hirtellous on ribs, sometimes glabrous; pappi 5–6+ mm. |
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2n | = 44, 46, 92. |
= 44, 46. |
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Packera neomexicana |
Packera neomexicana var. toumeyi |
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Phenology | Flowering mid Apr–early Jul. | |||||||||
Habitat | Well-drained, rocky soils in coniferous woodlands | |||||||||
Elevation | 1800–2500 m (5900–8200 ft) | |||||||||
Distribution |
AZ; CO; NM; UT; w Mexico
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AZ; NM |
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Discussion | Varieties 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Variety toumeyi is known only from the Pinal, Chiricahua, and Santa Catalina mountains of Arizona and the Animas and Black mountains of New Mexico. Although range and habitat of var. toumeyi overlap with those of var. neomexicana, the two are readily distinguished. Adaxial leaf faces of var. toumeyi are glabrate and the plants are scapiform. (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. 594. | ||||||||
Parent taxa | Asteraceae > tribe Senecioneae > Packera | Asteraceae > tribe Senecioneae > Packera > Packera neomexicana | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Senecio neomexicanus | Senecio toumeyi, Senecio blumeri, Senecio neomexicanus var. toumeyi | ||||||||
Name authority | (A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 47. (1981) | (Greene) Trock & T. M. Barkley: Sida 18: 386. (1998) | ||||||||
Web links |