Journal Article

Floral development and anatomy of Salvadoraceae

Louis Ronse De Craene and Livia Wanntorp

in Annals of Botany

Published on behalf of The Annals of Botany Company

Volume 104, issue 5, pages 913-923
Published in print October 2009 | ISSN: 0305-7364
Published online July 2009 | e-ISSN: 1095-8290 | DOI: http://dx.doi.org/10.1093/aob/mcp170
Floral development and anatomy of Salvadoraceae

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  • Ecology and Conservation
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Background and Aims

This study is an investigation into the floral development and anatomy of two genera of the small family Salvadoraceae, which belongs to the Brassicales in a clade with Batis and Koeberlinia. Salvadoraceae remains little known, despite its wide distribution in arid areas of the globe. Floral morphological data are scarce, and information on floral anatomy is limited to a single study, although morphological and anatomical characters are now used increasingly as a counterpart of molecular data. There remain a number of controversial morphological questions, such as the fusion of the petals, the number of carpels and the nature of the nectaries.

Methods

Floral anatomy and ontogeny were studied in two species of Salvadora and one species of Dobera. Only for S. persica could a full floral developmental sequence be done.

Key Results

The floral development demonstrates that the ovary of Salvadoraceae is basically bicarpellate and pseudomonomerous with a single locule and parietal placenta. The ovary of Dobera resembles Azima tetracantha in the presence of a false apical septum. Evidence for a staminodial nature of the nectaries is not decisive. In Salvadora petals and stamens are lifted by a short hypanthium.

Conclusions

Salvadoraceae share several morphological and developmental synapomorphies with Batis (Bataceae) and possibly Koeberlinia (Koeberliniaceae), supporting their close relationship as indicated by molecular phylogeny.

Keywords: Batis; Brassicales; Dobera; Emblingia; floral development; floral anatomy; Koeberlinia; phylogeny; Salvadora; Salvadoraceae; SEM

Journal Article.  4738 words.  Illustrated.

Subjects: Ecology and Conservation ; Evolutionary Biology ; Plant Sciences and Forestry

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