Eryngo is an upright perennial with a taproot. Its preferred habitat is pine lands and savannas. Distribution is throughout the Escambia region. The leaves are alternate on the stem, with basal leaves appearing lance-like, elliptic, or triangulkar on leaf stalks and toothed. The upper leaves are sessile or nearly so, and may be toothed or have small spines. Fruit is an ovoid schizocarp.

The flowers are terminal umbels subtended by toothed bracts. The flowers are in a head subtended by bractlets. Each flower is bisexual in nature and symmetrical in form. There will be five petals that are light blue in color. Flowers occur in the summer.

Eryngo may also be known as Black Snakeroot.