This has a straggling, hairy, sticky stem, over a foot long, and thickish, dull-green leaves, hairy and sticky. The flowers are about half an inch long, white or tinged with pink, and are rather delicate and pretty, though the plant is not especially attractive. It blooms at night, the flowers gradually closing with the morning sun. This variety is common in the southern part of the state, in mountain canyons, and Hesperonia glutinosa is common in the north.
There are several kinds of Abronia, all American, with branching, usually sticky-hairy stems, thick, toothless leaves, with leaf-stalks, in pairs and one of each pair somewhat larger than the other. The flowers are more or less salver-form, with five lobes, a threadlike style, and from three to five, unequal stamens, on the tube of the perianth and not protruding from it. They are numerous and in clusters, with involucres, on long flower-stalks, from the angles of the leaves. The fruit is winged. The name is from the Greek meaning graceful, but most of these plants are rather awkward in their manner of growth.
Hesperonia glutinosa var. gracilis. California Four o'clock H.Californica. FOUR-O'CLOCK FAMILY. Nyctaginaceae.