SG Heritage Dictionary

Hypogynous [Adjective] Webster's Dictionary 1828

A term applied to plants that have their corols and stamens inserted under the pistil.

Hypogynous [Adjective] Webster's Dictionary 1913

Inserted below the pistil or pistils; -- said of sepals, petals, and stamens; having the sepals, petals, and stamens inserted below the pistil; -- said of a flower or a plant.