A perennial, not especially pretty, with a stout, reddish stem, from one to three feet tall, slightly downy above, and dull green leaves, mostly smooth and the lower ones opposite. The flowers are less than half an inch across, with bright or pale, purplish-pink petals, deeply notched and not spreading. This grows in wet spots around San Francisco. There are several kinds of Gayophyturn; differing from Epilobium in the capsule and seeds, and easily distinguished from them by the hairy buds; leaves alternate, long, narrow, and toothless; flowers small; petals four, white or pink, with very short claws; stamens, with swinging anthers, eight, four shorter and usually sterile; capsule club-shaped. The species are difficult to distinguish, because of the smallness of the flowers.