About Isocoma tenuisecta Greene
Isocoma tenuisecta, commonly known as burroweed, shrine jimmyweed, or burrow goldenweed, is a North American species of small flowering perennial herb in the family Asteraceae. It is native to Arizona, New Mexico, and Sonora. This plant grows 30 to 90 centimeters (1 to 3 feet) tall. Its leaves are narrowly lance-shaped, with numerous large teeth or small lobes along the edges, and are glandular. Isocoma tenuisecta flowers from September through November, producing clusters of flower heads at the ends of branches and at the top of the main stem. Each flower head contains 8 to 15 yellow disc flowers and no ray flowers. After the achenes are dispersed, old dried tan flower heads remain attached to the plant. Burroweed is poisonous to mammals, including cattle, and cattle can pass this poison to humans through their milk.