Biflavonoids: Dimers (homo and hetero) of FLAVONOIDS.Garcinia: A plant genus of the family CLUSIACEAE. Members contain XANTHONES.Daphne: A plant genus of the family THYMELAEACEAE. They are evergreen shrubs much cultivated in garden borders and rock gardens in mild climates. Members contain mezerein, flavonoids, and COUMARINS such as daphnetin and daphnin.Cycas: A plant genus of the family Cycadaceae, order Cycadales, class Cycadopsida, division CYCADOPHYTA of palm-like trees. It is a source of CYCASIN, the beta-D-glucoside of methylazoxymethanol.Prenylation: Attachment of isoprenoids (TERPENES) to other compounds, especially PROTEINS and FLAVONOIDS.Plant Extracts: Concentrated pharmaceutical preparations of plants obtained by removing active constituents with a suitable solvent, which is evaporated away, and adjusting the residue to a prescribed standard.Flavonoids: A group of phenyl benzopyrans named for having structures like FLAVONES.