Packera neomexicana

(A. Gray) W. A. Weber & Á. Löve

Phytologia 49: 47. 1981.

Basionym: Senecio neomexicanus A. Gray in A. Gray et al., Syn. Fl. N. Amer. 1(2): 392. 1884 (as neo-mexicanus)
Treatment appears in FNA Volume 20. Treatment on page 593. Mentioned on page 576, 578.

Perennials, biennials, or annuals, 20–50+ cm; fibrous-rooted, taprooted, or ± rhizomatous (bases branched, horizontal or ascending to erect). Stems 1 or 2–5+, clustered, lanate or arachno-tomentose or glabrescent. 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). Cauline leaves gradually or abruptly reduced (proximal petiolate, similar to basals; mids and distals sessile, lanceolate, entire). Heads 3–20+ in open or compact, corymbiform to subumbelliform arrays (subtended by smaller arrays arising from leaf-axils). Peduncles conspicuously bracteate, usually hairy. Calyculi conspicuous. Phyllaries 13 or 21, green or yellowish, 4–7+ mm, tomentose to glabrescent. Ray-florets (5–) 8 or 13; corolla laminae 4–10 mm. Disc-florets 40–60+; corolla-tubes 1.5–2.5 mm, limbs 3.5–4.5 mm. Cypselae 1.5–2.5 mm, usually hirtellous on ribs, sometimes glabrous; pappi 5–6+ mm. 2n = 44, 46, 92.

Distribution

V20-1325-distribution-map.gif

Ariz., Colo., N.Mex., Utah, w Mexico

Discussion

Varieties 3 (3 in the flora).

Selected References

None.

Key

1 Plants loosely tomentose or glabrate; basal leaves: blades narrowly lanceolate, margins subentire or irregularly dentate Packera neomexicana 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 Packera neomexicana var. neomexicana
2 Plants rhizomatous or fibrous-rooted; cauline leaves inconspicuous (bractlike) Packera neomexicana var. toumeyi
... more about "Packera neomexicana"
92 +, 46 +  and 44 +
not tailed +, rounded +  and obtuse +
papillate +
truncate-penicillate +
scarious +
usually ovate +  and lance-linear +
compact corymbiform +  and subumbelliform +
indeterminate +  and determinate +
Debra K. Trock +
(A. Gray) W. A. Weber & Á. Löve +
tapering +
Senecio neomexicanus +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
ovate;lanceolate or narrowly lanceolate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
winged;nerved;ribbed +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
pale-yellow +  and deep orange-red +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
glabrous +  and hirtellous +
cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, Colo. +, N.Mex. +, Utah +  and w Mexico +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
discoid +  and radiate +
in compact or congested to open corymbiform cymiform or subumbelliform , , , arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate;cylindric +
sessile +  and petiolate +
cauline +  and basal +
erect;recurved +
deltate +
dentate to pinnatifid +  and entire +
denticulate +  and subserrate +
2-carpellate +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
list +  and count +
tomentose +  and glabrescent +
linear +  and ensiform +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
bearing subulate enations +, hairy +  and bristly +
conic;usually flat;convex +
exalbuminous +
prostrate +  and ascending +
glabrescent +, arachno-tomentose +  and lanate +
2 +  and 5 +
appendaged +  and truncate +
papillate +
Compositae +
Packera neomexicana +
species +
campanulate +
serrate +  and denticulate +
fibrous-rooted +, rhizomatous +  and taprooted +
annual +, biennial +  and perennial +
20 cm200 mm <br />0.2 m <br /> (50 cm500 mm <br />0.5 m <br />) +
vine +, tree +, shrub +  and subshrub +
23 +, 22 +  and 20 +