vinca difformis - intermediate periwinkle newly in bloom. portugal.

white vincristine vinca vinblastine undefined treatment summer springtime spring solitary small selective purple portugal plant petal periwinkle perfect path nature natural minor medicinal mauve macro leukemia lesser leaf isolated intermediate green fresh focus flowering flower floral flora environment difformis common closeup clipping chemotherapy cancer bright botany botanical blue blooming beauty alkaloid beautiful bloom background anticancer apocynaceae