Various authors disagree about the identification of cereal pollen based on phase contrast studies. Pollen of the common cereals and some wild grasses of a similar size range were examined with a scanning electron microscope. The pollen grains ofHordeum, Secale, Triticum monococcum, Agropyron, Ammophila, ElymusandGlyceriaspecies have a scabrate sculpture of varying coarseness. The pollen of otherTriticumspecies andAvenahave an areolate sculpture.
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