The five white or pale pink petals of geranium richardsonii
flowers have rounded tips and are crossed by branched, purple veins (usually thin, sometimes thick and dark), running lengthwise; they are separated by green sepals (underneath), which have a hairy surface and a protruding, reddish spike at the tip. The center of the flower is greenish, with ten stamens, curving back somewhat. The branched stalks are red or green in color and quite hairy; the hairs are topped by tiny red gland, as are the hairs on the narrow, tubular green fruits.
The divided, pointed-lobed leaves grow around the base and at widely-spaced intervals up the stem, on long stalks. Leaf edges and surface have a covering of short hairs. Tips and edges of the leaves take on a reddish color as they age. The plant has wide distribution, from Canada to Arizona and New Mexico, and forms hybrids.