Suddenly a wild 'Mermaid' (William Paul 1906) bloom appears near the top of a fence. We did not know that this rose still existed here at all - lost in a crowding of climbing roses along the rear fence line of the rose garden. We've not seen a bloom on this rose in more than 10 years.
The large pale yellow blooms have a simple five petal form. A shrub with many blooms will give the impression of butterflies resting on the shrub.