Publication
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Studies in Annonaceae. IV. A taxonomic revision of Tetrameranthus R.E. Fries Article
Miscellaneous publications of the University of Utrecht Herbarium, 1(1), 449-482.January 1983
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Studies on the flora of the Guianas 14. New taxa and combinations in Sorocea (Moraceae) and a key to its species Article
Miscellaneous publications of the University of Utrecht Herbarium, 1(1), 381-394.January 1983
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Two new species of Dorstenia (Moraceae) from East Brazil Article
Miscellaneous publications of the University of Utrecht Herbarium, 1(1), 261-265.January 1983
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The systematic wood anatomy of the Moraceae (Urticales) IV. Genera of the tribe Moreae with urticaceous stamens Article
Miscellaneous publications of the University of Utrecht Herbarium, 1(1), 91-128.January 1983
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The Little-known Afrotropical genus Trichocephala Moser, with notice of a second species (Coleoptera: Cetoniidae) Article
Zoologische Mededelingen, 57(27), 357-362.January 1983
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Synaptospory in the fern genus Pyrrosia (Polypodiaceae) Article
Miscellaneous publications of the University of Utrecht Herbarium, 1(1), 57-64.January 1983
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Studies in Annonaceae. VII. New species from the Neotropics and miscellaneous notes Article
Miscellaneous publications of the University of Utrecht Herbarium, 1(1), 249-278.January 1983
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A new species of Dorstenia (Moraceae) from Mexico Article
Miscellaneous publications of the University of Utrecht Herbarium, 1(1), 129-132.January 1983