Hugh and Carol Nourse@Flickr, of Georgia, USA, seem to have taken a trip to Arizona this spring, where one of them captured this photograph of Calliandra eriophylla (shared via the Botany Photo of the Day Flickr Pool). Thanks once again!
Fairy duster has previously been featured by Eric La Fountaine: Calliandra eriophylla from June 2009. Today’s photograph shows the plants in situ, or in habitat, growing along the Sutherland Trail in Catalina State Park.
As Eric alluded to, the showy parts of the flowers are not the petals, but rather the long filaments of the many stamens (link includes additional photographs).