California buckwheat (Eriogonum fasciculatum) is a small shrub, usually about three feet tall, with small leaves, and flowers that grow in an umbel, pink or white, but turning to a rusty red as they wither. Abundant seeds that were used for food, raw or cooked. Ants also use the seeds as food. It was also used to treat colds, head aches, and some infections. The flowers were also used as a laxative and mouth wash.