Packera tampicana
Packera neomexicana
Great Plains ragwort
New Mexico groundsel
1 or 2–6+, clustered (bases cyanic), glabrous or leaf axils sparsely tomentose.
1 or 2–5+, clustered, lanate- or arachno-tomentose or glabrescent.
(and proximal cauline) petiolate;
blades oblanceolate to spatulate (usually pinnately lobed, lateral lobes 1–6+ pairs, their bases petioluliform, terminal lobes usually larger than laterals, often reniform to ± orbiculate, midribs sometimes ± winged and/or toothed between the primary lobes), 40–120+ × 10–30+ mm, bases ± cuneate, ultimate margins subentire or irregularly crenate, dentate, or lobed.
(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).
gradually reduced (± petiolate or sessile, clasping; often auriculate, pinnately dissected to pinnately lobed).
gradually or abruptly reduced (proximal petiolate, similar to basals; mids and distals sessile, lanceolate, entire).
bracteate, glabrous.
conspicuously bracteate, usually hairy.
8 or 13;
corolla laminae 3–7 mm.
(5–)8 or 13;
corolla laminae 4–10 mm.
30–45(–100+);
corolla tubes 1.5–2.5 mm, limbs (1.5–)2.5–3.5 mm.
40–60+;
corolla tubes 1.5–2.5 mm, limbs 3.5–4.5 mm.
13 or 21, green (tips sometimes reddish), 3–7 mm, glabrous.
13 or 21, green or yellowish, 4–7+ mm, tomentose to glabrescent.
inconspicuous or 0.
conspicuous.
4–25+ in corymbiform arrays.
3–20+ in open or compact, corymbiform to subumbelliform arrays (subtended by smaller arrays arising from leaf axils).
1–1.5 mm, hirtellous on ribs;
pappi 3–5 mm.
1.5–2.5 mm, usually hirtellous on ribs, sometimes glabrous;
pappi 5–6+ mm.
= 46.
= 44, 46, 92.
Packera tampicana
Packera neomexicana
Packera tampicana is fairly widespread along the Gulf Coastal Plain and north and in Mexico. Morphologically, P. tampicana most closely resembles P. glabella; the former grows in very wet, sandy or clay soils and open sunlight, the latter grows in drier habitats, usually in partial shade.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Varieties 3 (3 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Plants loosely tomentose or glabrate; basal leaves: blades narrowly lanceolate, margins subentire or irregularly dentate | var. mutabilis |
1. Plants usually densely lanate or woolly tomentose, seldom glabrate; basal leaves: blades ovate or broadly lanceolate, margins dentate to deeply dentate or dissected | → 2 |
2. Plants taprooted; cauline leaves conspicuous | var. neomexicana |
2. Plants rhizomatous or fibrous-rooted; cauline leaves inconspicuous (bractlike) | var. toumeyi |
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