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Flower of the Chilean Bellflower Nolana paradoxa and corolla pigmentation. a Photograph of the adaxial side of the flower. b Photograph of the abaxial side of the flower. c Epi-illumination micrograph of the adaxial epidermis, indicated by the black rectangle in (a). d, e Epi-illumination micrographs of the abaxial epidermis in the violet (black rectangle in b) and white area (white rectangle in b). f Cross section of the corolla. Scale bars a, b 1 cm; c–f 50 µm
