Calochortus amabilis is a species of flowering plant in the lily family which is known by the common name Diogenes' lantern. It is endemic to northern California, where it grows in the mountains north of the San Francisco Bay Area. In oak woodlands common understory plant associates are Calochortus luteus, Clarkia unguiculata and Delphinium variegatum. It is a common member of the scrub and woodland flora there. This is a perennial herb producing an upright, somewhat waxy branching stem to heights between 10 and 50 centimeters. The leaf at the base of the stem is flat, waxy, and narrow in shape, reaching up to 50 centimeters long and not withering away at flowering. The flower cluster bears two or more heavily nodding flowers, each with spreading pointed yellow sepals and brown-speckled yellow petals. The inside of the petals is waxy and coated in small hairs. The fruit is a winged capsule up to three centimeters long containing dark brown seeds.