Erigeron scopulinus (Rock fleabane)

Erigeron scopulinus (Rock fleabane)

Photograph by Tim Waters at (2010)
Scientific Name with Author
Erigeron scopulinus Nesom & Roth
Common Name
Rock fleabane
Rare Plant Conservation Scorecard Summary
Overall Conservation Status Documented Threats Actions Needed

Mining and quarrying

Status surveys on abundance, distribution and threats. Study fire impacts

Perennial, mat-forming herb with fibrous root system and slender rhizomes up to 15 cm long; leaves clustered at tips of rhizomes, 5-12 mm long, 1.0-3.5 mm wide, spatulate or obovate, broadest above the middle, tapering toward the petiole, margins entire, glabrous or sparsely pubescent; flower heads solitary on bare stems, 6-33 mm tall; involucral bracts overlapping in 3-4 series, lance-shaped, narrowly pointed at the tip, 4-5 mm long, glabrous or sparsely pubescent; ray flowers 12-20, white, drying white to light violet, 5.5-9.0 mm long; achenes sparsely appressed-pubescent; pappus of barbellate bristles. Flowers May and June.
Similar Species
The rhizomatous mat-forming habit, low stature, and cliff habitats distinguish this species from other Erigeron species in southwestern New Mexico.
New Mexico, southern Catron, northwestern Sierra, western Socorro counties, Black Range, Mogollon and San Mateo mountains; adjacent Arizona, Chiricahua Mountains.
Crevices in cliff faces of rhyolitic rock in lower montane coniferous forest; 1,800-2,800 m (6,000-9,000 ft).
Populations of this species are sporadic and disjunct, but can be locally very abundant.
Conservation Considerations
The cliff face habitats in often remote areas effectively remove this rare plant from potential impacts of most land uses. Minerals exploration and development could impact some populations.
Important Literature

*New Mexico Native Plants Protection Advisory Committee. 1984. A handbook of rare and endemic plants of New Mexico. University of New Mexico Press, Albuquerque.

*Nesom, G.L. and V.D. Roth. 1982. Erigeron scopulinus (Compositae), an endemic from the southwestern United States. Journal of Arizona-Nevada Academy of Science 16:39-42.

Information Compiled By
Robert Sivinski 1999

For distribution maps and more information, visit Natural Heritage New Mexico