Railroad Vine is also known as Seaside Morning Glory.

Plant is a trailing vine with calyx not hidden by bracts; perennial. Preferred habitat is drift areas of beaches, dunes and overwash flats. Distribution is coastal.

Leaves are smooth; consisting of one whole part; no teeth and no lobes; widest at the center; base is also rounded and tapers to the tip with sides less than equal or may be kidney-shaped (reniform).

Flowers have one stigma; which is two-lobed; corolla funnel-shaped; membranes fused; bisexual; symmetrical. Flowers occur in the spring and summer.

Fruit is a capsule