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Ovular Morphology and the Classification of Dicotyledons

  • Chapter
Flowering Plants

Abstract

Four types of ovule are defined by integument number and nucellar thickness. Their distribution throughout the dicotyledons is summarized and their importance in defining major subclasses is advocated. In particular, those families with ovules having a single integument are considered to form a complex of orders and families which includes most sympetalous and several polypetalous groups (including Cornales, Araliales, Escalloniaceae and Pittosporaceae). This complex (provisionally referred to as the Unitegminae) is believed to comprise the modern representative of a distinct evolutionary line within the dicotyledons.

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Authors and Affiliations

  1. Department of Botany, University of Canterbury, Christchurch, New Zealand

    Professor W. R. Philipson

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  1. Professor W. R. Philipson
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Editors and Affiliations

  1. Institut für Allgemeine Botanik und Botanischer Garten, Universität Hamburg, Federal Republic of Germany

    Klaus Kubitzki

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© 1977 Springer-Verlag

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Philipson, W.R. (1977). Ovular Morphology and the Classification of Dicotyledons. In: Kubitzki, K. (eds) Flowering Plants. Plant Systematics and Evolution / Entwicklungsgeschichte und Systematik der Pflanzen, vol 1. Springer, Vienna. https://doi.org/10.1007/978-3-7091-7076-2_9

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  • DOI: https://doi.org/10.1007/978-3-7091-7076-2_9

  • Publisher Name: Springer, Vienna

  • Print ISBN: 978-3-211-81434-5

  • Online ISBN: 978-3-7091-7076-2

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