Strophostyles helvola, commonly called amberique-bean,[2] annual sand bean,[3] or trailing fuzzybean[4] is a species of flowering plant in the legume family.

[1] It is an annual to perennial herbaceous vine, up to 3 m (9.8 ft) long, with light pubescence on the stem, leaves, and pods.

The fruit of S. helvola is up to 10 cm (3.9 in) long, containing shiny black seeds with hairy coats originating from the inner surface of the pods.

[6][7] Strophostyles helvola is a wild relative of the cultivated common bean (Phaseolus vulgaris), and could serve as an important model for understanding how herbaceous legumes adapt to different stressful environments.

Specifically, S. helvola has coastal populations which show high salinity tolerance due to up-regulated genes.