Matelea carolinensis aka Maroon Carolina Milkvine

Matelea carolinensis, also known as maroon Carolina milkvine and Carolina anglepod, is a rare, native perennial twining vine in the dogbane family, Apocynaceae. It is found in open deciduous woods, stream banks, power lines, and along roadways in the southeastern United States, from Maryland to Texas. The plant has milky sap and broad, opposite, ovate leaves that are often heart-shaped, growing to 5-10cm. Its deep purple or occasionally yellow flowers are 1-2cm in size and the fruit is a follicle. As a houseplant, Maroon Carolina Milkvine requires regular watering and long-lasting direct light, thriving best when placed less than 1 foot from a window.