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Supplement to article in The Botanical Review 7: 507–S42. 1941. EMC = endosperm mother cell; ES = embryo sac; PMC = pollen mother cell.
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Nygren, A. Apomixis in the angiosperms. II. Bot. Rev 20, 577–649 (1954). https://doi.org/10.1007/BF02958805
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DOI: https://doi.org/10.1007/BF02958805