This tetraploid (2n = 28) is the most common cultivated rose of gardens (often known as "French rose"). There are reported colls. from ELLI (A. Cusick, pers. comm.) and WHIT (MM for WKY), but the degree of naturalization remains uncertain (CW). The old hybrid with small globular multi-petaled flowers known as R. X centifolia L. or R. gallica var. centifolia (L.) Regel ("cabbage rose") is derived from a complex of gallica and other species. It has been widely cultivated, and often persists at old home sites.