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Image Title: Floral changes in Androsace lanuginosa (Primulaceae)
Image Credit: Martha R. Weiss, University of California
AJB Editor: Karl Niklas, Cornell University
Intended End User: Teacher, Student
License Details: BSA - Terms for Image Use
Copyright held by:  Martha R. Weiss, BSA
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About the Image

The central yellow ring of a young Androsace lanuginosa (Primulaceae) flower turns red over several days, while the rest of the flower remains fresh and unchanged. The color presumably signals the plant's fly pollinators, which visit only rewarding,yellow-phase flowers. Such floral color changes occur in at least 77 families in 33 orders.

Link to the AJB Abstract for the article:

Floral color change: a widespread functional convergences

National Science Foundation  Development Supported by the National Science Foundation