The leaves of atlantic pigeon wings are alternate and petiolate, featuring a trifoliate arrangement. Each leaf comprises egg-shaped or lance-shaped leaflets, measuring 1 to 2 inches (2.5 to 5 cm) in length. The leaflets are ovate to lanceolate, glabrous on the upper surface, and either glabrous or short pubescent beneath. They possess entire margins, contributing to their smooth edges. The texture and outline of the leaflets, along with their size, are key identification features.

Atlantic pigeon wings flowers bloom from May through September, exhibiting pale lavender-blue to violet hues. Each flower measures about 2 inches (5 cm) in size, featuring a large rounded standard that is notched at the tip. The keel and white petals are notably shorter. These flowers, ranging from 1 to 3 per stalk, emerge from the axils of leaves. Late in the season, the plant produces small, bud-like flowers. Ideal for identification, their distinct color and configuration make them noteworthy.

The stem of atlantic pigeon wings is erect to reclining or trailing, with a glabrous to sparsely pubescent texture featuring short, fine, curved hairs. The stems are green in color and may be unbranched or develop branches near the base. They display a smooth, slightly glossy surface, and their thickness varies moderately, often maintaining consistent diameter along their length.

The fruit of atlantic pigeon wings is a distinctive, flattened legume, naturally adapted to facilitate its distribution. Typically, it measures about 2 to 3 inches (5 to 7.5 cm) in length. The outer shell tends to be fibrous with a slight texture that may vary from smooth to slightly rough. As for coloration, it exhibits hues ranging from green when immature, to tan or brown as it reaches maturity, blending well with the surrounding foliage. Remarkably, the seeds within have a unique adhesive characteristic, making them sticky to the touch. This stickiness possibly aids in dispersal by adhering to animals or environmental elements.