Crocanthemum scoparium

Crocanthemum scoparium is a species of rockrose which is endemic to California. Its common names include peak rockrose and peak rushrose. One variety is known as Bisbee Peak rushrose.

It is found in dry, sandy areas in hills and low mountains.

Description
Crocanthemum scoparium is a small perennial shrub bearing long, smooth stems and small flowers each with five bright yellow petals.