Hog-peanut

Amphicarpaea bracteata

''Amphicarpaea bracteata'' is an annual to perennial vine in the legume family, native to woodland, thickets, and moist slopes in eastern North America.
American Hog-Peanut (Amphicarpaea bracteata) At a dense mixed forest edge.  Amphicarpaea bracteata,Geotagged,Hog-peanut,Summer,United States

Appearance

Leaves have three leaflets and are held alternately on twining stems.

Flowers are pink to white and bloom from late summer to autumn. The flowers are either open for cross-pollination or closed and self-pollinating. The closed flowers may be above or below ground.

Seeds from open flowers are held in a flat pod, pointed at both ends, that dries when mature and twists to release the seeds. Seeds from closed flowers are held in round pods with a single seed each. The roots and seeds are edible. The seeds which become subterranean from flowers on stolons give it the name peanut.

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Taxonomy
KingdomPlantae
DivisionAngiosperms
ClassEudicots
OrderFabales
FamilyFabaceae
GenusAmphicarpaea
SpeciesA. bracteata