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Micromorphology of a hand-pollinated flower of Epipogium aphyllum (SEM). (A,B) Stigma built by papillae. (C,D) Gynostemium with the massulae on the 2nd day after hand-pollination. (E,F) Germinated pollen grains grouped in tetrads on the stigma. Abbreviations: an – anther, lsl – lobe of stigma, ma – massulae, pg – pollen grains, ro – rostellum, st – stigma cells.
