Packera neomexicana var. neomexicana

Common names: New Mexico groundsel
Synonyms: Senecio appendiculatus Greenman Senecio encelia Greene Senecio eurypterus Greenman Senecio oreophilus Greenman Senecio oresbius Greenman
Treatment appears in FNA Volume 20. Treatment on page 593. Mentioned on page 594.

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.

Phenology: Flowering early Apr–late Jun.
Habitat: Rocky soils, oak-conifer or chaparral associations
Elevation: 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.

Selected References


Lower Taxa

Debra K. Trock +
(A. Gray) W. A. Weber & Á. Löve +
Senecio neomexicanus +
New Mexico groundsel +
Ariz. +, N.Mex. +, Mexico (Chihuahua +, Coahuila +  and Sonora). +
1200–2400 m +
Rocky soils, oak-conifer or chaparral associations +
Flowering early Apr–late Jun. +
Senecio appendiculatus +, Senecio encelia +, Senecio eurypterus +, Senecio oreophilus +  and Senecio oresbius +
Packera neomexicana var. neomexicana +
Packera neomexicana +
variety +