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    Union Catalogue of Agricultural Libraries in the Netherlands

    The WUR Library Catalogue contains bibliographic data on books and periodicals held by the libraries of Wageningen University and Research Centre and some 15 associated libraries. Holding data are added to each record.

    Subjects covered include Agrotechnology, Food and Food Production, Plant and Animal Sciences, Soil Science, Geo-information, Landscape and Spatial Planning, Water and Climate, Ecosystem Studies, Economics and Society.

    The joint collections of the participating libraries cover a substantial part of the internationally available scientific literature in these disciplines.

    As far as Dutch scientific literature in these fields is concerned, coverage can be considered near 100%, including much of the so-called "grey literature".

    All titles are entered in their original language. Keywords are added to facilitate subject searching.

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Record number 104100
Title The African Dichapetalaceae, pt. 3 : a taxonomical revision : species a-b
show extra info.
F.J. Breteler
Author(s) Breteler, F.J.
Publisher Wageningen : Veenman
Publication year 1973
Description 124 p
Notes Proefschrift Wageningen
Ook verschenen als handelsuitgave
Tutors Wit, Prof. Dr. H.C.D. de
Graduation date 1973-10-31
Dissertation no. 567
Author abstract show abstract

This publication is the first one of a series concerning the taxonomical. revision of the African Dichapetalaceae. Of this family the species occur almost exclusively in the tropics of both the old and the new world, but most abundantly in Africa.

In this instalment, the first concerning the genus Dichapetalum, the gross morphology of the species is extensively treated, and related to the morphological tendencies of the two remaining genera of the family, i.e. Stephanopodium and Tapura. This proved to be especially important in connection with the systematical position of the Dichapetalaceae, about which different opinions are held. These different views are mainly caused by differences in the interpretation of the petals and staminodes. It is demonstrated here, that the former should be considered to be staminodes and not proper petals, while the latter are true staminodes and not nectariferous glands.

ENGLER'S conception according to which the family belongs in the order Geraniales is supported, but not his view concerning close relationship with Euphorbiaceae. Trigoniaceae and possibly Malpighiaceae appear to be the close relatives.

The growth mode of the usually lianescent species is closely observed and illustrated. The wide variation between specimens of the same species receives close attention as well. This variability concerns, amongst others, habit, indumentum, inflorescence, and fruit shape.

In the taxonomical part 18 species are described, of which 5 are new, while one is newly combined in Dichapetalum. The great variability has led in the past to the description of numerous species that have to be reduced into synonymy. This would hardly have been possible without the aid of repeated field observations in Africa, on which occasions ample herbarium material was collected. Apart from the author, several others, mainly staffmembers of the Laboratory for Plant Taxonomy and Plant Geography (WAG) have contributed considerably. Also this fieldwork has added substantially towards a better picture of the distribution of the species.

Specific names as well as synonyms are treated in alphabetical order to facilitate easier access to this work. For the accepted species the most important literature references are given followed by typification and synonyms; the latter are typified and their main literature references are given as well. As the descriptions of the species are rather extensive, the most important characters have been summarized in 'diagnostic characters'. Each species is illustrated in detail and, where useful, a distribution-map is added.

As it will take some time before the revision of the genus Dichapetalum will be completed, a provisional key to the continental species is appended.

Online full textINTERNET
On paper FORUM ; STACKS ; NN08200,567
FORUM ; STACKS ; NN08202,567
FORUM ; STACKS ; 1674B38 ; dl. 1-9 in 1 bd
Keyword(s) (cab) dichapetalaceae / taxonomic revisions / africa
Categories Rosidae / Plant Taxonomy
Publication type PhD thesis
Language English
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