(Eryngium racemosum)
Eryngium racemosum is a mostly prostrate perennial herb with a slender, branching stem spreading to a maximum length near half a meter. The stem may root at nodes that come in contact with moist soil. The serrated or lobed leaves have blades a few centimeters long and are borne on longer petioles. The inflorescence is a raceme of rounded or oval flower heads, each surrounded by five long, narrow, spiny bracts. The flowers in the head bloom in white or purple-tinged petals in June through September.