Flavonoids of Lupinus texensis and L. subcarnosus

Lupinus texensis and L.- subcarnosus exhibit very similar flavonoid profiles based on O-glycosylflavones, Cglycosylflavones, an isoflavone and a flavanone. Differences between the two species amount to the presence of a diglucoside of diosmetin in L. texensis and comparatively higher concentrations of C-glycosylflavones in L. subcarnosus. The two species have a higher degree of flavonoid pigment similarity than any other pair of lupines examined in our studies. The similar profiles support the view that these two endemic Texan species are closely related.