Ipomoea pes-caprae subsp. brasiliensis is a vine species known for its long-trailing stems that can extend up to 5 meters or more, often rooting at the nodes. These stems are fleshy to nearly woody and emerge from a thickened taproot with a glabrous surface. The leaves are simple, alternate, and frequently secund, with shapes ranging from ovate to reniform and sizes between 3 to 11 cm long, featuring an emarginate apex and a base that can be cuneate to cordate. The leaves are fleshy, glabrous, and possess entire margins. Flowers are usually solitary or occasionally form cymes, typically axillary, with pedicels measuring 10 to 30 mm in length. They are bisexual, actinomorphic, and display a calyx of five distinct sepals, varying from glabrous to pubescent, and a corolla of five fused petals that are pink to lavender purple, funnelform, and 5 to 7 cm long. The stamens are distinct, and the ovary is superior, leading to brown, ovoid to depressed-globose capsules that are 1.2 to 1.7 cm long, glabrous, and dehiscent by four to six valves. The seeds are 1–4 per fruit; brown to nearly black; ovoid; trigonous; 6–10 mm long; densely brown tomentose; endosperm absent or scanty; cartilaginous; cotyledons usually foliaceous. It primarily occurs on beaches and occasionally inland between 0-460 m.