Packera bolanderi |
Packera clevelandii |
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Bolander's groundsel, Bolander's ragwort |
Cleveland's ragwort |
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Habit | Perennials, 20–50+ cm; fibrous-rooted (caudices creeping). | Perennials, 30–80+ cm; taprooted (caudices suberect to erect, stout). | ||||
Stems | 1 or 2–3, loosely clustered, glabrous. |
usually 1 (sometimes more, clustered), glaucous. |
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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, relatively thick and turgid) petiolate; blades lanceolate to narrowly oblanceolate, 30–100+ × 10–20+ mm, bases tapering, margins entire or subentire. |
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Cauline leaves | gradually reduced (petiolate or sessile and clasping; lanceolate, incised). |
gradually reduced (sessile and weakly clasping; lanceolate, entire). |
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Peduncles | ebracteate or inconspicuously bracteate, glabrous. |
conspicuously bracteate, glaucous. |
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Ray florets | 8 or 13; corolla laminae 10–15+ mm. |
8–10(–13); corolla laminae 5–7 mm. |
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Disc florets | 30–45+; corolla tubes 3–4 mm, limbs 3.5–4.5 mm. |
25–40+; corolla tubes 2–3 mm, limbs 3–4 mm. |
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Phyllaries | (8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally. |
(13) 21, green (tips often purple), glabrous. |
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Calyculi | conspicuous. |
conspicuous. |
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Heads | 8–15+ in corymbiform or subumbelliform arrays. |
12–20+ in open, corymbiform arrays. |
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Cypselae | 2.5–3.5 mm, glabrous; pappi 5–7 mm. |
1–1.5 mm, glabrous; pappi 5–6 mm. |
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2n | = 46. |
= 46. |
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Packera bolanderi |
Packera clevelandii |
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Phenology | Flowering mid Jun–mid Jul. | |||||
Habitat | Rocky, serpentine soils, open, dry, shrubby areas, dry streambeds | |||||
Elevation | 300–700 m (1000–2300 ft) | |||||
Distribution |
CA; OR; WA
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CA
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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 clevelandii is known only from the North Coast Ranges and foothills of the Sierra Nevada on serpentine soils in chaparral communities. It is the only Packera with subsucculent, glaucous herbage. (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. 582. | ||||
Parent taxa | Asteraceae > tribe Senecioneae > Packera | Asteraceae > tribe Senecioneae > Packera | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Senecio bolanderi | Senecio clevelandii, Senecio clevelandii var. heterophyllus | ||||
Name authority | (A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 45. (1981) | (Greene) W. A. Weber & Á. Löve: Phytologia 49: 46. (1981) | ||||
Web links |