Emory Rock Daisy

Perityle emoryi

Rock Daisy, Perityle emoryi, photo © by Mike Plagens

Observed at South Mountain Park, Maricopa Co., Arizona, USA. April 2010.

ANNUAL or PERENNIAL HERB: A mostly small plant that grows often in steep rocky places. Some woody tissue may be present at the crown, but otherwise the plant is fleshy-herbaceous.

FLOWERS: Short white rays surrounding bright yellow disc on daisies that are usually less than 2 cm diameter. Flowering mostly March to May.

RANGE: In Arizona Upper & Lower Sonoran Desert generally on rocky slopes and below cliff faces. May become more abundant and conspicuous in wet years. Blooming mostly in spring but also sporadically throughout year.

FRUIT: A dark flattened seed with a weak crown of a few scales or a bristle.

UNARMED: No thorns or spines.

Asteraceae -- Sunflower Family

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More Information:

Sonoran Desert Field Guide
Sonoran Desert Places
Sonoran Desert Naturalist Home Page


Copyright Michael J. Plagens, page created 14 April 2010.