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The Floral Biology of <i>Duchesnea</i> (Rosaceae)

NAOHIRO NARUHASHI, MAMORU SUGIMOTO · Plant Species Biology · 1996

Abstract Pollinators and UV photos of flowers of Duchesnea chrysantha and D. indica are discussed. The petals of D. chrysantha reflect UV light strongly, while those of D. indica have a nectar guide appearing as a spot at the base of the petals that absorbs UV light. This is the same as in Potentilla which is closely related taxonomically. In Duchesnea , we consider the presence of a nectar guide to be a derived character. The petals of D. chrysantha and D. indica are distinguished by the presence or absence of nectar guides, but both species are pollinated mostly by the same kind of pollinators, which are commonly small polylectic insects. The main pollinators are four small bees ( Andrena knuthi, A. minutula, Halictus aerarius, Lasioglossum sp.) and three syrphid flies (

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