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Epicuticular wax structures on valleculae of main axis internodes (left) and main axis leaf sheaths (right) of fertile sprouts. (A+C) Smooth wax film with granules on the epidermal surface. (B+D) Non-oriented platelets (sp, silica papilla), (E) large membraneous platelets, (F) membraneous platelets. (A+B) E. arvense, (C+D) E. telmateia, (E+F) E. sylvaticum.
