Aspects of floral morphology in Ambrosina and Arisarum (Araceae)

Aspects of floral morphology in Ambrosina and ...

Title	Aspects of floral morphology in Ambrosina and Arisarum (Araceae)
Author(s)	D. Barabe, C. Lacroix, M. Gibernau
Date	2004
Volume	82
Issue	2
Start page	282
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.
ISSN	00084026

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