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Flavonoid Chemistry of Barnadesioideae (Asteraceae)

Bruce A. Bohm and Tod F. Stuessy
Systematic Botany
Vol. 20, No. 1 (Jan. - Mar., 1995), pp. 22-27
DOI: 10.2307/2419629
Stable URL: http://www.jstor.org/stable/2419629
Page Count: 6
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Flavonoid Chemistry of Barnadesioideae (Asteraceae)
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Abstract

The flavonoid profiles of some species of the following genera of the Barnadesioideae (Asteraceae) consist of mono- and diglycosides of kaempferol and quercetin: Arnaldoa, Barnadesia, Chuquiraga, Dasyphyllum, Doniophyton, Fulcaldea, and Schlechtendalia. These South American genera previously comprised part of the subtribe Barnadesiinae of Mutisieae. Very simple flavonoid profiles were also noted for the Chilean monotypic Gypothamnium and the Hawaiian endemic Hesperomannia arborescens of subtribe Mutisiinae. The simple flavonoid profiles of the barnadesioid genera are taken as further evidence for the primitive status of this subfamily as suggested by the absence of a 22kb cpDNA inversion in this group of genera. Preliminary studies of the flavonoids of the Calyceraceae have shown that the pigment profile of species of Acicarpha and Gamocarpha are very similar to the profile seen in the barnadesioid genera. A brief discussion of relationships between Barnadesioideae and Acicarpha as a possible representative of the prototypical Calyceraceae, indicated by floral development, diploid chromosome number, geography, and flavonoid chemistry, is included.

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