Description from Flora of China
Vinca major var. variegata Loudon.
Herbs to 1 m tall, flowering stems to 30 cm. Leaf blade elliptic, ovate, or broadly ovate, 2-9 X 2-6 cm, base truncate or subcordate, margin ciliate with hairs 0.1-1 mm; lateral veins to 5 pairs. Pedicel 3-5 cm. Sepals narrowly triangular, ca. 9 mm, densely ciliate. Corolla bluish purple, tube 1.2-1.5 cm, limb 3-5 cm in diam., lobes obliquely truncate. Anthers short, applanate, apex puberulent. Follicles spreading, ca. 5 cm. Fl. Mar-May. 2n = 92.
Cultivated for medicine.
Jiangsu, Taiwan, Yunnan, Zhejiang [native to Europe]