MEM 57 C11-Flavonoid Chemistry and the Taxonomy of Cycads.

This purchase only includes chapter 11 of this title.

Abstract
RICHARDSON, P. M. (New York Botanical Garden, Bronx, New York 10458, USA) Flavonoid chemistry and the taxonomy of cycads. Memoirs of The New York Botanical Garden 57: 132–141. 1990. The llavonoid chemistry of the cycads is comprehensively reviewed from a historical and taxonomic viewpoint. The chemistry and phylogeny of lower plants is discussed with a view to choice of an outgroup for phylogenetic analysis of the cycads based upon their Havonoid chemistry, using mainly C-glycosylflavones, biflavones and proanthocyanidins. Lack of variation within genera limits the resolution of resultant cladograms. Literature reports of other phenolic substances such as cinnamic acids and lignins are also discussed.

Keywords: cycads, biochemical systematics, flavonoids, tannins, lignins, cladistics