Leptosidin
Encyclopedia
Leptosidin was the first aurone to be isolated in Coreopsis grandiflora
Coreopsis grandiflora
Coreopsis grandiflora is a perennial plant species of the tickseed genus, Coreopsis, in Asteraceae. The common name is large-flowered tickseed....

by Geissman T.A. and Heaton C.D. in 1943.
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