About Anisocarpus madioides Nutt.
Anisocarpus madioides is a perennial herb that reaches a maximum height of approximately 75 centimeters. Its stem is covered in rough hairs and stalked resin glands. Lower leaves are oppositely arranged, grow up to 12 centimeters long, and have bases fused around the stem. Upper leaves are much smaller, and are often alternately arranged along the stem. The inflorescence bears several flower heads on long peduncles; each flower head has a rounded involucre made of glandular phyllaries. Flower heads hold yellow ray florets up to 1 centimeter long, plus numerous disc florets. It produces an achene fruit a few millimeters long, which usually has a small pappus. Its flowering period runs from April to September. This species is native to the west coast of North America, where it occurs on Vancouver Island in British Columbia, Canada, and the U.S. states of Washington, Oregon, and California. It grows in forest and woodland habitat. Most populations are found in the Cascades and Coast Ranges, stretching from Vancouver Island to San Luis Obispo County. Additional collections of the species have been made from the foothills of the northern Sierra Nevada and the Agua Tibia Mountains of San Diego County.
