Growth Form:Forb/herb; herbaceous; upright or spreading; multiple stems; plants delicate or robust; covered with soft hair or rough hairy; foliage has oil glands.
Leaves: Leaves green; variable in shape; heart- or triangular-shaped; leaf edges deeply toothed, deeply cut or divided; leaves arranged alternately along stem.
Flower Color: White with yellow center; flowers small but showy; one or more flower heads; flowers with both ray and diskflorets; fruit is a cypsela.
Flowering Season: January or February to October and November - may flower year-round.
Elevation: Below 5,000 feet (1,524 m)
Habitat Preferences: Various habitats, lower deserts primarily, rocky hillsides and rocky cliffs, sandy or gravelly soil, desert washes; often associated with Creosote (Larrea) Bush Scrub and Coastal Sage Scrub in California.
Recorded Range: Found in the southwest United States in AZ, CA, NV and UT. It occurs primarily in AZ and CA. Emory's Rockdaisy is also native to Baja California where it is found throughout the entire region and to northwest Mexico as well as South America. Introduced species in Hawaii.
North America & US County Distribution Map for Perityle emoryi.
North America species range map for Emory's Rockdaisy, Perityle emoryi:
Click image for full size map
Genus Information: In North America there are 36 species and 36 accepted taxa overall for Perityle. Worldwide, The Plant List includes 68 accepted species names and a further 43 scientific names of infraspecific rank for Perityle.
The genus Perityle was published by George Bentham in 1844.
In the Southwestern United States: Arizona has 13 species of Perityle, California and New Mexico each have 5 species, Nevada has 7 species, Texas has 16 species, Utah has 4 species. Data approximate and subject to revision.
Comments: Emory's Rockdaisy is a pretty daisy-like adaptable wildflower common in the lower desert areas of the southwest and may become a non-aggressive weed in desert landscapes. It is extremely variable in looks and profile as it may be observed as a delicate single erect stem plants or a much more robust multi-branched or sprawling plants, and it might be slightly hairy to rough glandular hairy.
Importance to Wildlife, Birds and Livestock
Emory's Rockdaisy, Perityle emoryi showy white and yellow flowers, and their seeds and plants may be visited by hummingbirds and/or small mammals including rodents and granivorous birds in search of nectar or food.
Beneficial Value to Butterflies, Bees and Insects
Emory's Rockdaisy, Perityle emoryi brightly colored flowers, and their plants may be visited by butterflies, moths and other insects in search of food and nectar. daisy-like flowers, showy flowers
Etymology:
The genus “Perityle” (Perit'yle:) from the Greek peri, “around,” and tyle, “a callus,” and meaning “around the margin,” referring to the thick calloused margin of the achenes.
The genus Perityle was published by George Bentham in 1844.
