Packera ionophylla |
Packera bolanderi |
|||||
---|---|---|---|---|---|---|
Tehachapi ragwort |
Bolander's groundsel, Bolander's ragwort |
|||||
Habit | Perennials, 15–30+ cm; taprooted (caudices erect) or rhizomatous (rhizomes branched). | Perennials, 20–50+ cm; fibrous-rooted (caudices creeping). | ||||
Stems | usually 1, rarely 2–3, clustered, irregularly arachnoid-tomentose to lanate-tomentose or glabrescent. |
1 or 2–3, loosely clustered, glabrous. |
||||
Basal leaves | (and proximal cauline, relatively turgid) petiolate; blades broadly ovate or lyrate (± pinnately lobed, lateral lobes 1–3 pairs, smaller than terminals), 10–30+ × 10–20+ mm, bases tapering to cuneate, ultimate margins subentire or crenate to coarsely dentate (abaxial faces tomentose). |
(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 (sessile; bractlike, entire). |
gradually reduced (petiolate or sessile and clasping; lanceolate, incised). |
||||
Peduncles | bracteate, irregularly tomentose. |
ebracteate or inconspicuously bracteate, glabrous. |
||||
Ray florets | 8–13; corolla laminae 8–10 mm. |
8 or 13; corolla laminae 10–15+ mm. |
||||
Disc florets | 60–75+; corolla tubes 2.5–4 mm, limbs 3.5–5 mm. |
30–45+; corolla tubes 3–4 mm, limbs 3.5–4.5 mm. |
||||
Phyllaries | (8–)13 or 21, green, 7–10+ mm, densely tomentose proximally, glabrescent distally (tips hair-tufted). |
(8), 13, or 21, dark green, 5–8 mm, glabrous or sparsely tomentose proximally. |
||||
Calyculi | inconspicuous. |
conspicuous. |
||||
Heads | 3–6 in cymiform arrays. |
8–15+ in corymbiform or subumbelliform arrays. |
||||
Cypselae | 2–2.5 mm, glabrous; pappi 5–7 mm. |
2.5–3.5 mm, glabrous; pappi 5–7 mm. |
||||
2n | = 46. |
= 46. |
||||
Packera ionophylla |
Packera bolanderi |
|||||
Phenology | Flowering early Jun–late Aug. | |||||
Habitat | Dry, rocky slopes, crevices, granitic outcrops, coniferous woodlands | |||||
Elevation | 1400–3000 m (4600–9800 ft) | |||||
Distribution |
CA
|
CA; OR; WA
|
||||
Discussion | Of conservation concern. Packera ionophylla is known only from the San Bernardino, San Gabriel, and Tehachapi mountains and a population on Alamo Mountain in eastern Ventura County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
||||
Key |
|
|||||
Source | FNA vol. 20, p. 590. | FNA vol. 20, p. 579. | ||||
Parent taxa | Asteraceae > tribe Senecioneae > Packera | Asteraceae > tribe Senecioneae > Packera | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Senecio ionophyllus, Senecio ionophyllus var. intrepidus | Senecio bolanderi | ||||
Name authority | (Greene) W. A. Weber & Á. Löve: Phytologia 49: 47. (1981) | (A. Gray) W. A. Weber & Á. Löve: Phytologia 49: 45. (1981) | ||||
Web links |