Stems and leaves of krameria bicolor
appear greyish-green (canescent) due to a covering of silky white hairs. Plants are woody shrubs, with upright stems that branch many times and are pointed at the tips, Leaves are short and narrow, quite thick, and equally hairy on both sides.
Flowers are borne singly at the leaf nodes. Buds are slightly curved upwards at the tip. The most visible component of the flowers are the five purple-red sepals, which are angled backwards when mature, in contrast to those of krameria erecta
(a species found in the same regions) which are spreading to ascending. Sepals are somewhat different in shape, and unevenly spaced; four are close together, the other opposite. The five petals are smaller. Three point upwards; these are the flag petals, purple around the edges otherwise green, oblanceolate in shape and not obviously clawed, or fused. The two lower (glandular) petals are thicker, and larger, positioned either side of the ovary and the base of the four pink/purple stamens.