Publication
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The Loganiaceae of Africa XIII. Buddleja L. I. Article
Acta botanica neerlandica, 24(1), 83-86.January 1975
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Summaries of Doctor’s Theses and of other Dutch papers which might escape attention because of their mode of publication Article
Acta botanica neerlandica, 24(1), 86-86.January 1975
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Periodicity and distribution of brackish Vaucheria species from non-tidal coastal areas in the S.W. Netherlands Article
Acta botanica neerlandica, 24(2), 89-110.January 1975
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The life history of Acrosymphyton purpuriferum (J. Ag.) Sjöst. (Rhodophyceae, Cryptonemiales). Isolation of tetrasporophytes. With some remarks on the tetrasporophyte of Bonnemaisonia asparagoides (Woodw.) C. Ag. (Nemalionales) Article
Acta botanica neerlandica, 24(2), 111-127.January 1975
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Investigation of a population of Mentha X niliaca Juss. ex Jacq. found in natural conditions at Oudemolen (Dr.) Article
Acta botanica neerlandica, 24(2), 129-133.January 1975
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Pollination of Eulophia cristata (Sw.) Steud. (Orchidaceae) in Southern Ghana Article
Acta botanica neerlandica, 24(2), 135-138.January 1975
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Quelques espèces nouvelles de Taraxacum, de France Article
Acta botanica neerlandica, 24(2), 139-154.January 1975
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Floral evolution in the Hamamelididae. I. General assessment of the probable phylogeny and taxonomic position of the group Article
Acta botanica neerlandica, 24(2), 155-164.January 1975