Packera bolanderi

(A. Gray) W. A. Weber & Á. Löve

Phytologia 49: 45. 1981.

Endemic
Basionym: Senecio bolanderi A. Gray Proc. Amer. Acad. Arts 7: 362. 1868
Treatment appears in FNA Volume 20. Treatment on page 579. Mentioned on page 575, 580.

Perennials, 20–50+ cm; fibrous-rooted (caudices creeping). Stems 1 or 2–3, loosely clustered, glabrous. Basal leaves (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. Cauline leaves gradually reduced (petiolate or sessile and clasping; lanceolate, incised). Heads 8–15+ in corymbiform or subumbelliform arrays. Peduncles ebracteate or inconspicuously bracteate, glabrous. Calyculi conspicuous. Phyllaries (8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally. Ray-florets 8 or 13; corolla laminae 10–15+ mm. Disc-florets 30–45+; corolla-tubes 3–4 mm, limbs 3.5–4.5 mm. Cypselae 2.5–3.5 mm, glabrous; pappi 5–7 mm. 2n = 46.

Discussion

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.

Selected References

None.

Key

1 Basal leaves (relatively thick and turgid); phyllaries 13 or 21, 6–8+ mm, hairy proximally (hairs tan or brownish, multicelled) Packera bolanderi var. bolanderi
1 Basal leaves (relatively thin); phyllaries 8, 13, (or 21), 5–6 mm, glabrous Packera bolanderi var. harfordii
... more about "Packera bolanderi"
not tailed +, rounded +  and obtuse +
papillate +
truncate-penicillate +
scarious +
usually ovate +  and lance-linear +
subumbelliform +  and corymbiform +
indeterminate +  and determinate +
Debra K. Trock +
(A. Gray) W. A. Weber & Á. Löve +
cordate +  and subcordate +
Senecio bolanderi +
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
less orbiculate;oblong or lyrate +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
winged;nerved;ribbed +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
pale-yellow +  and deep orange-red +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
cylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Calif. +, Oreg. +  and Wash. +
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 +
2-carpellate +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
bracteate +  and ebracteate +
tomentose +  and glabrous +
linear +  and ensiform +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
bearing subulate enations +, hairy +  and bristly +
conic;usually flat;convex +
exalbuminous +
prostrate +  and ascending +
2 +  and 3 +
appendaged +  and truncate +
papillate +
Compositae +
Packera bolanderi +
species +
campanulate +
serrate +  and denticulate +
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 +