Anthocyanins from Fuchsia flowers.

Flowers of Fuchsia arborescens, F. boliviana, F. fulgens var. 'Variegata', F. magellanica (Onagraceae) and twenty-nine F. magellanica cultivars contained some of the thirteen anthocyanidin 3,5-diglucosides (six), 3-monoglycosides (five) and 3-(2"-galloylglucosides) (two), which altogether were identified. Peonidin 3-O-(2"-O-galloyl-beta-glucopyranoside), which has not been reported before, was found in F. magellanica and F. fulgens var. 'Variegata'. The various corollas with purple nuances were correlated with a relatively high content of malvidin 3,5-diglucoside. Flower colors were to a large extent correlated with the number of oxygen substituents on the anthocyanidin B-ring of the major anthocyanins.