Coville’s Mule-ears

Agnorhiza invenusta, commonly known as Coville’s Mule-ears, is a perennial herbaceous plant native to the southwestern United States, specifically found in the regions of California and Nevada. This species typically grows in arid and semi-arid environments, often inhabiting rocky slopes and open grasslands at elevations ranging from 1,000 to 3,000 meters. The growth habit of Coville’s Mule-ears is characterized by a clumping form, reaching heights of 30 to 60 centimeters. The plant has a robust structure with a basal rosette of leaves that are broad, lanceolate, and can measure up to 25 centimeters in length, exhibiting a distinctive hairy texture that aids in moisture retention.

The flowering period of Agnorhiza invenusta occurs primarily in late spring to early summer, producing inflorescences that are composed of bright yellow, daisy-like flowers. Each flower head typically measures about 5 to 7 centimeters in diameter and consists of numerous ray florets surrounding a central disc. After pollination, the plant produces achenes, which are small, dry fruits that contain a single seed. These fruits are adapted for wind dispersal, allowing for efficient propagation in the plant’s native habitat. Coville’s Mule-ears plays a significant ecological role by providing nectar and pollen for various pollinators, including bees and butterflies, thereby supporting local biodiversity. Additionally, its ability to thrive in harsh conditions makes it a valuable species for soil stabilization and erosion control in its native range.