Vincetoxicum hirundinaria subsp. nivale

Vincetoxicum hirundinaria subsp. nivale is a perennial plant in the Apocynaceae family.
Leaves are oblanceolate, mid-petiolate, upper sessile, blade ovate, 3-7 cm long, cordate to obtuse at base, entire, pointed to acuminate, nearly glabrous or only finely hairy on veins and margins.