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Ultrastructure of Utricularia cornigera palate papillae. a General ultrastructure of the basal part of papillae; bar = 1 μm. b, c Polymorphic plastids in papillae. Note the numerous osmiophilic plastoglobuli within plastids and that plastids are closely associated with the endoplasmic reticulum (arrows); bars = 0.8 and 0.6 μm; d dictyosome, M mitochondria, mb microbody, n nucleus, PB intranuclear paracrystalline body, V vacuole; circle plasmodesmata, star osmiophilic body
