Koanophyllon sinaloense is a species of flowering plant in the sunflower family. It is found only in the States of Sonora and Sinaloa in northwestern Mexico. Koanophyllon sinaloense is a shrub up to 2 meters (80 inches or almost 7 feet) tall. One plant will produce many small flower heads in a flat-topped array, each head with 13-19 white or pale lavender disc flowers but no ray flowers.