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Chemical Composition of Intergeneric Hybrids Between Ligularia and Cremanthodium Collected in Sichuan Province of China

Two intergeneric hybrids between Ligularia nelumbifolia and Cremanthodium stenoglossum were examined with respect to the chemical composition of root extracts and the sequences of neutral DNA regions. The DNA data showed that the direction of hybridization was different between the individuals. Eremophilane sesquiterpenes were found in both hybrids and deduced to have come from their Cremanthodium parents, because sesquiterpenes were detected in C. stenoglossum but not in L. nelumbifolia.