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FNA | Family List | FNA Vol. 20 | Asteraceae | Packera

36b. Packera neomexicana (A. Gray) W. A. Weber & Á. Löve var. neomexicana

New Mexico groundsel

Senecio appendiculatus Greenman; S. encelia Greene; S. eurypterus Greenman; S. oreophilus Greenman; S. oresbius Greenman

Annuals, biennials, or perennials, usually lanate or woolly, rarely glabrate, taprooted. Stems 1. Basal leaves: blades ovate to obovate, margins deeply dentate or dissected. Cauline leaves conspicuous. 2n = 46, 92.

Flowering early Apr–late Jun. Rocky soils, oak-conifer or chaparral associations; 1200–2400 m; Ariz., N.Mex.; Mexico (Chihuahua, Coahuila, Sonora).

Variety neomexicana is known from throughout Arizona and in southern and western New Mexico. Its persistent, heavy tomentum and well-developed cauline leaves make it easy to recognize. If type of Senecio thurberi A. Gray belongs within circumscription of Packera neomexicana (see T. M. Barkley 1978), a new combination in Packera will be necessary.


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