Cleome spinosa
A hairy, sticky 2-4' plant with a ridged stem. The lower leaves are palmately compound with 5-7 lance-shaped leaflets that may be smooth-edged or fine-toothed. The simple upper leaves are ovate with a heart-shaped base. The showy 1-3" flowers are in a raceme. There are 4 pink (or white) petals that taper to a narrow base and are irregularly arranged, often more to the upper part of the flower. The 4 small linear sepals are sweptback and the 6 stamens are extraordinarily long. Blooms June-September. An escape from cultivation.