Packera bolanderi |
Packera flettii |
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Bolander's groundsel, Bolander's ragwort |
Flett's groundsel, Flett's ragwort |
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Habit | Perennials, 20–50+ cm; fibrous-rooted (caudices creeping). | Perennials, 10–40+ cm; rhizomatous (rhizomes horizontal to erect). | ||||
Stems | 1 or 2–3, loosely clustered, glabrous. |
1 or 2–5 (often scapiform), loosely clustered, glabrous or leaf axils sparsely hairy. |
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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. |
(and proximal cauline) petiolate; blades obovate to ovate or sublyrate, 30–60+ × 10–40+ mm, bases tapering, margins deeply dissected or pinnatifid, ultimate margins crenate to crenate-dentate. |
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Cauline leaves | gradually reduced (petiolate or sessile and clasping; lanceolate, incised). |
abruptly reduced or 0 (sessile; ovate to obovate, dissected or pinnatifid). |
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Peduncles | ebracteate or inconspicuously bracteate, glabrous. |
inconspicuously bracteate or ebracteate, glabrous. |
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Ray florets | 8 or 13; corolla laminae 10–15+ mm. |
5 or 8; corolla laminae 5–10 mm. |
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Disc florets | 30–45+; corolla tubes 3–4 mm, limbs 3.5–4.5 mm. |
20–30+; corolla tubes 2.5–3.5 mm, limbs 2.5–3.5 mm. |
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Phyllaries | (8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally. |
(8–)13, light green (tips yellowish), 4–7 mm, glabrous. |
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Calyculi | conspicuous. |
0 or inconspicuous. |
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Heads | 8–15+ in corymbiform or subumbelliform arrays. |
4–10+ in subumbelliform cymiform arrays. |
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Cypselae | 2.5–3.5 mm, glabrous; pappi 5–7 mm. |
1–1.5 mm, glabrous; pappi 4–4.5 mm. |
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2n | = 46. |
= 40. |
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Packera bolanderi |
Packera flettii |
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Phenology | Flowering early Jul–mid Aug. | |||||
Habitat | Exposed slopes, rocky or gravelly soils | |||||
Elevation | 700–2000 m [2300–6600 ft] | |||||
Distribution |
CA; OR; WA
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OR; WA
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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. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Packera flettii is known from the Olympic Mountains and near Mt. Rainer in Washington and coastal mountains of Clatsop County, Oregon. It has a chromosome number unique in the genus and is not known to hybridize with other species of Packera. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 20, p. 579. | FNA vol. 20, p. 587. | ||||
Parent taxa | ||||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Senecio bolanderi | Senecio flettii | ||||
Name authority | (A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 45. (1981) | (Wiegand) W. A. Weber & Á. Löve: Phytologia 49: 46. (1981) | ||||
Web links |