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Packera ionophylla

Packera ionophylla (Greene) W.A. Weber & A. Löve  
Family: Asteraceae
Tehachapi Groundsel
[Senecio intrepidus Greenm.]
Packera ionophylla image
  • FNA
  • Resources
Debra K. Trock in Flora of North America (vol. 20)
Perennials, 15-30+ cm; taprooted (caudices erect) or rhizomatous (rhizomes branched). Stems usually 1, rarely 2-3, clustered, irregularly arachnoid-tomentose to lanate-tomentose or glabrescent. 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). Cauline leaves gradually reduced (sessile; bractlike, entire). Heads 3-6 in cymiform arrays. Peduncles bracteate, irregularly tomentose. Calyculi inconspicuous. Phyllaries (8-)13 or 21, green, 7-10+ mm, densely tomentose proximally, glabrescent distally (tips hair-tufted). Ray florets 8-13; corolla laminae 8-10 mm. Disc florets 60-75+; corolla tubes 2.5-4 mm, limbs 3.5-5 mm. Cypselae 2-2.5 mm, glabrous; pappi 5-7 mm. 2n = 46.

Flowering early Jun-late Aug. Dry, rocky slopes, crevices, granitic outcrops, coniferous woodlands; of conservation concern; 1400-3000 m; Calif.

Packera ionophylla is known only from the San Bernardino, San Gabriel, and Tehachapi mountains and a population on Alamo Mountain in eastern Ventura County.

Packera ionophylla
Open Interactive Map
Packera ionophylla image
Packera ionophylla image
Packera ionophylla image
Packera ionophylla image
Packera ionophylla image
Packera ionophylla image
Packera ionophylla image
Packera ionophylla image
Packera ionophylla image
Packera ionophylla image
Packera ionophylla image
Packera ionophylla image
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This project was made possible in part by the Institute of Museum and Library Services [MG-70-19-0057-19].

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