Publication
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The Loganiaceae of Africa. VI. Retzia Article
Acta botanica neerlandica, 13(3), 333-339.January 1964
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Changes in the Epidermal Pattern of the Sepals of Hydrangea Macrophylla (Thunb.) D.C., “Otaksa” in their Successive Growth Phases. Formation of New Stomata, Disintegration of Old Stomata Article
Acta botanica neerlandica, 13(3), 340-351.January 1964
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The Gynoecium of Engelhardia Spicata (Juglandaceae) ant its Phylogenetic Significance Article
Acta botanica neerlandica, 13(3), 352-366.January 1964
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A New Classification of the Water-plant Communities Article
Acta botanica neerlandica, 13(3), 367-393.January 1964
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Kritische Bemerkungen und Vorschläge zur Quantitativen Vegetationsanalyse Article
Acta botanica neerlandica, 13(3), 394-419.January 1964
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The Occurrence of Newly Induced Phloem in Shoot-producing Explants of Root Tissue of Cichorium Intybus L. Var. Sativa Bisch. Cultivated in Vitro Article
Acta botanica neerlandica, 13(3), 420-421.January 1964
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Description of Dipsacus Fullonum L. Pollen Article
Acta botanica neerlandica, 13(3), 422-431.January 1964
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Chromosome numbers of some flowering plants collected in Surinam (Botanical Museum and Herbarium, Utrecht) Article
Acta botanica neerlandica, 13(3), 432-433.January 1964