Its common names include long-ray brodiaea[1] and longray triteleia.

It is endemic to California, where it occurs in the coastal and inland mountain ranges of the northern and central sections of the state.

The inflorescence arises on a smooth, erect stem up to 80 cm (31 in) tall.

Each funnel-shaped flower is white, often tinged purple, with six tepals up to 1.6 cm (0.6 in) in length.

There are six stamens with white anthers, and the ovary at the center is yellow when the flower is young.