Tetraclaea coulteri  Wrinklefruit
PERENNIAL.  Leaves opposite, oval, slightly fuzzy, with a few shallow teeth and prominent veins.  Flowers creamy yellow, washed with pink or purple on the backs, with stamens longer than the corolla.  Blooms at night, April-May. Flowers may remain open on cloudy days.  In the Empires, rare along small washes in semi-shade.
FAMILY:  Verbenaceae (Vervain Family)