Constancea nevinii, commonly known as Nevin's Woolly Sunflower, is a perennial subshrub native to the Channel Islands of California. This species is a member of the Asteraceae family, which includes many familiar plants like daisies and sunflowers. Nevin's Woolly Sunflower is notable for its adaptation to the unique island environment and its distinctive woolly foliage. The plant typically grows to a height of about 0.5 to 1.5 meters, forming a somewhat spreading habit. Its most striking feature is its dense covering of soft, white, woolly hairs, which give the leaves and stems a silvery appearance. These hairs likely serve to reduce water loss through transpiration and protect the plant from intense sunlight and wind, adaptations crucial for survival in its coastal habitat. The leaves are generally ovate to lanceolate, measuring between 3 to 8 centimeters in length, and are arranged alternately along the stems. Flowering occurs primarily from spring through summer, with the plant producing numerous daisy-like flower heads. Each composite flower head is typically 2 to 3 centimeters in diameter and features bright yellow ray florets surrounding a central disk of yellow to orange tubular florets. These flowers are attractive to pollinators, playing a role in the island's ecosystem. Following pollination, small, dry fruits called achenes develop, which are the seeds of the plant. Constancea nevinii is endemic to the islands of San Clemente, Santa Catalina, and Santa Cruz in the California Channel Islands. It thrives in coastal sage scrub, chaparral, and open, rocky slopes, often found in areas with well-drained soil and full sun exposure. While it is adapted to a Mediterranean climate with dry summers and mild, wet winters, it can be cultivated in similar environments outside its native range. Successful cultivation requires excellent drainage, ample sunlight, and protection from excessive moisture, especially during the summer months. The ecological significance of Nevin's Woolly Sunflower lies in its role as a native component of the Channel Islands flora, contributing to biodiversity and providing habitat and food sources for local wildlife. Its endemic status makes it particularly important for conservation efforts aimed at preserving the unique natural heritage of these islands. While not widely used for agricultural, medicinal, or culinary purposes, its ornamental appeal, owing to its silvery foliage and cheerful yellow flowers, makes it a desirable plant for xeriscaping and native plant gardens where conditions mimic its natural habitat. Its adaptations to arid and exposed conditions make it a resilient choice for challenging garden sites.