Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
a) Osteospermum pinnatum mirror angle; b) O. pinnatum pigment angle; c) Dimorphotheca sinuata mirror angle; d) D. sinuata pigment angle. Thick lines denote the back of the petals, thin lines the front; black lines denote the base of the petals, grey lines denote the tips. Panels a, b and d are the mean values for three sets of measurements; c is the mean values for five sets of measurements.
