This annual grows on a branching erect stem with small leaves at intervals. At the top of each stem branch is one or more flowers, each about a centimeter wide. The tubular flower has two long, narrow, pointed upper lobes which may be blue or purple. The three lower lobes are fused into one three-lobed surface, which is blue or purple with a large blotch of white in the center and blotches of maroon toward the mouth of the tube. There may also be speckles of yellow.
