Orthosia scoparia, commonly known as the leafless swallow-wort, is a species of flowering plant in the genus Orthosia. It is an herbaceous vine with narrow opposite leaves. It is a host plant for the caterpillars of various butterfly species as well as Sephina gundlachii. It is in the Apocynaceae (Dogbane) family.[1] It grows in the Southeastern U.S. and Caribbean and is native in the Bahamas, Cuba, Dominican Republic, Florida, Georgia, Haiti, Jamaica, Mississippi, Puerto Rico and South Carolina. A perennial it has yellowish / greenish white flowers. Caterpillars of the faithful beauty moth (Composia fidelissima) are thoughtto feed on it.[2]
A climbing milkweed vine it reaches about 5 feet tall.[3] It has six homotypic synonyms and twenty heterotypic synonyms.