Abstract
The occurrence of hydroxycinnamic acid-spermidine amides and quercetin 3- O-glucosylgalactoside in pollen of Fagales and some other taxa of the Hamamelididae ( sensu Takhtajan and Cronquist) has been investigated. The genera Alnus, Betula, Corylus, and Quercus show characteristic patterns of N 1,N 10-di-( E)-feruloylspermidine, N 1, N 10-di-( E)-feruloylspermidine, N 1, N 10 -( E)-caffeoyl-( E)-feruloylspermidine and several N, N-di- p-coumaroylspermidines. The occurrence of these amides—together with some other unidentified hydroxycinnamic acid conjugates and quercetin 3- O-glucosylgalactoside—in extracts of the pollen grains support suggested relationships among Fagales, Juglandales, and Myricales.
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