About Castilleja rubicundula (Jeps.) T.I.Chuang & Heckard
Castilleja rubicundula is a hairy, glandular annual herb that grows to approximately half a meter tall. Its stem is leafy, bearing lance-shaped leaves. The species produces a terminal inflorescence, and sometimes develops several additional inflorescences from branching. Its flowers may be white, pink, yellow, or bicolored, and are typically divided into three pouches that give the flowers an inflated appearance. Each pouch is around one centimeter wide and half a centimeter deep. A beak extends roughly half a centimeter above the pouches of each flower. The fruit is a capsule that holds tiny seeds, which measure less than one millimeter long. When viewed under magnification, the seed coat has a visible honeycomb pattern. This annual wildflower is native to northern California, and its range extends into southwestern Oregon. It grows in both coastal and inland grasslands.