The reddish green stems of erodium texanum
are ascending to prostrate, and have a fine covering of very short, white hairs. Leaves are also sparsely hairy, shallowly lobed, with one terminal lobe and a pair of side lobes. Leaf margins are lined with large, angular teeth, and the surface is crossed by a prominent, branched, depressed vein, often reddish. Leaves grow on stalks, which are shorter than the blades.
The five sepals are hairy at the tip, and around a third of an inch long. The five petals are obovate in shape, colored deep pink-purple (darker at the base), and marked with darker veins. At the center are five purple stamens topped by orange-brown anthers, and a pink, five-lobed pistil. Fruits have five pointed segments and a long, narrow, upwards-pointing beak, tapering to a point.