is a small, much branched shrub, forming clusters several feet high and wide, and bearing somewhat inconspicuous flowerheads during spring and summer. It inhabits desert areas, favoring limestone soils. Leaf surfaces have a dense covering of light grey, tomentose hairs, and are dotted with tiny glands. Leaves are usually lobed; a terminal lobe and three, five or seven lateral lobes.
Flowerheads, around a third of an inch in diameter, are formed of five relatively broad, notched, white (pistillate) ray florets, equally spaced around a center of between 10 and 25 white staminate disc florets. Phyllaries are in two series of five, the lower oval-shaped, the upper more rounded. Flowerheads are borne in compact clusters (glomerules).