Aspects of floral morphology in Ambrosina and ...



Title Aspects of floral morphology in Ambrosina and Arisarum (Araceae)
Author(s) Denis Barabe, Christian R. Lacroix, Marc Gibernau
Journal Canadian Journal of Botany
Date 2004
Volume 82
Issue 2
Start page 282
End page 289
Abstract The floral morphology of Ambrosina and Arisarum is analysed from a developmental and phylogenetic point of view. In Arisarum, there are atypical organs displaying male and female characteristics. This developmental study shows that the male flowers of Ambrosina are di- or tri-androus. A close phylogenetic relationship between Ambrosina and Arisarum is supported by their morphology. Both genera have the same type of pollen (ellipsoid, inapcrturate, striatc-reticulate) and the mode of dehiscence (by a longitudinal slit) of the thecae. In Arisarum, the pollen is mixed with extracellular prismatic crystals of calcium oxalate. [PUBLICATION ABSTRACT] Key words: atypical flowers, calcium oxalate crystals, flower development, phylogeny.
DOI 10.1139/b03-125

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