The foliage and flowers are intermediate between the parents, but it grows into a larger bush than either. Open fertilized seeds were sown, and a number of seedlings raised, a few of which have been named. The foliage is large, yellow-green. Flowers are large, single, rhodamine-purple, shading to white in the center, in clusters of one to three. Calyx limb is long and widens towards the tip.
Hips are bottle-shaped and attractive.
The leaves are small and the single flowers are rather brighter than aster purple. No seed-pods are formed. Micmac is evidently descended from R. X rubrosa, although its pedigree has been lost. The foliage is rugose in texture but red-purple in color, which does not seem to change all summer. Its flowers are white, with an occasional rose streak on some of the petals.