Flower color polymorphism in Iris lutescens (Iridaceae): Biochemical analyses in light of plant–insect interactions.

Highlights: [•] Anthocyanins, dominated by delphanin, were more concentrated in purple- than in yellow-flowered Iris lutescens. [•] Purple and yellow flowers could be visually discriminated between by bumbleebees. [•] The overall chemical composition of scent was not significantly different between morphs. [•] The scent of both morphs was dominated by terpenoids. [•] Color-scent correlation was demonstrated based on their shared biosynthetic pathway. [Copyright &y& Elsevier]