Book  (Apr 1993)  Page(s) 377.  
 
Micmac Shrub, white, R. rubrifolia x R. rugosa; Central Exp. Farm... hardy

Magazine  (1960)  
 
Micmac C.E.F. Ottawa. Seedling of R. rubrifolia x rugosa. The foliage of this plant is deep purplish red like its parent species. The flowers are white and borne in clusters. It forms an open shrub about 4 feet tall and is more interesting from a plant breeding standpoint than as an ornamental.

Book  (Jan 1946)  Page(s) 33.  
 
Micmac. C.E.F. Ottawa. Seedling of R. rubrifolia x rugosa. The foliage of this plant is deep purplish-red, much richer than that of any other rose grown at the Central Experimental Farm. The flowers are white and borne in clusters. It forms an open shrub about four feet tall.

Book  (1946)  Page(s) 52.  
 
In "Progress in Breeding Hardy Roses," Isabella Preston says,

MIcmac is descended from the rubrifolia-rugosa cross . . .. The plant sends up stems about six feet tall but it does not make a solid bush. The texture of the leaves shows plainly their rugosa parentage but the green is so thickly overlaid with reddish purple that the effect is much the same as that of other purple leaved shrubs. The single flowers are borne in clusters and are white with an occasional streak of rose. If the right conditions of growth and a suitable rootstock could b found for this variety, it would be a valuable plant for the shrubbery border.

Book  (1940)  Page(s) 91-92.  
 
In "Central Canadian rose-Breeding," Isabella Preston says,

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. It sets seed, but the hips are not conspicuous. The old wood of this plant frequently dies out.