Graham Stuart Thomas
In fact, all the wild species have a beauty that is never found in artificial hybrids. E. A. Bunyard, writing in the Royal Horticultural Society’s Journal in 1916, observed that “singles are God-made, doubles are man-made; a perfect flower should have anthers and pistils.”
The Graham Stuart Thomas Rose Book 1994, Graham Stuart Thomas, p. XXI.
A single wild rose bloom has from 4-9 petals; a double has many more petals in lieu of the anthers and pistils.