C. virginianum is a member of the Fabaceae family. The stems are tender and small in proportion to its height. Centrosema virginianum is perennial and a herbaceous vine a couple of meters in length; stems are approximately 29 to 160 centimeters long. It has three alternate pinnate leaves, 3 to 10 centimeters long. C. virginianum stipules are lanceolate or ovate, 1 to 4 mm long, and the petioles 2 to 5 cm long. C. virginianum is often deciduous, however it is mostly setaceous. Leaflets linear to ovate to oblong or lanceolate-oblong, acute or acuminate at the apex. C. virginianum produces abundant flowers, between early June and late September. C. virginianum is present Uruguay and northern Argentina to the eastern United States. The flowers of Centrosema virginianum, are highly specialized in an inverted flag adapted by pollinators. A group of one to four flowers on axillary penducle, calyx deeply five-lobed, and the acute lobes longer than the tube. The corolla purplish or lavender-blue close to white, it contains four to ten dark or brown seeds. The diversity of leaflets and corolla size, color and shape often are confused with C. pubescens. Lastly, C. virginianum flowers are known to be hermaphrodite and are pollinated by bees, additionally they contribute to nitrogen fixing.