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Optical properties (proportion of transmitted, reflected and absorbed PPFD) of anthocyanic leaves of S. hirsuta: intact leaf (A), mesophyll + adaxial epidermis (leaf in which the abaxial anthocyanic epidermis had been removed) (B), abaxial anthocyanic epidermis (C), and of intact acyanic leaf (D) are shown. The presence of chloroplasts in the stomata of the abaxial anthocyanic epidermis explains the absorption ∼650 nm (C).
