Eastern Nevada, northwest Arizona, Utah and small areas of Colorado and Wyoming
Coniferous and deciduous woodland, generally open and/or rocky sites, from 6,000 to 10,500 feet
Alternate, deciduous, broadly elliptic, hairless, finely toothed, up to 2 inches long
Ceanothus martinii is found across scattered mountain ranges, mostly in Utah, eastern Nevada, and the Kaibab Plateau in northern Arizona. Plants are small, much-branched shrubs, with greyish-green or brownish branches, lacking thorns, bearing broad, ovate to nearly round leaves at alternate intervals. Leaf margins are usually lined by small teeth, above the middle. Leaves have a midvein and a pair of side veins, branching from the base. Upper leaf surfaces are somewhat shiny. Leaves are attached by short stalks (up to a quarter of an inch), and they have a thin stipule at the base.
Flowers are arranged in short, slightly elongated clusters, from the upper leaf nodes. Each flower is formed of a slender nectary tube, pale yellowish-green in color, a disc-like hypanthium, five triangular, inwards-pointing sepals and five spreading, spoon-shaped petals.