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Micrographs of cleared and xylem-stained leaves and petals of the four eudicot species examined. (a) Leaf of P. myrtifolia, (b) petal of P. myrtifolia, (c) leaf of P. sativum, (d) petal of P. sativum, (e) leaf of P. tarminiana, (f) petal of P. tarminiana, (g) leaf of S. lycopersicum and (h) petal of S. lycopersicum.
