“Yellow flavonols” as components of pollen pigmentation

Abstract

Yellow coloration of pollen in some exceptional cases can be caused by the presence of intensely coloured flavonoids. Derivatives of herbacetin (sexangularetin) and of gossypetin (limocitrin) have been found as “yellow flavonols” in the pollen of some species of Paeonia and of Rumex. The pollen of Spinacea oleracea contains the 6-methyl ether of galetin and the quercetagetin derivatives patuletin and spinacetin. © 1981, Walter de Gruyter. All rights reserved.