Is 'Assiniboine' a Parkland series rose? It was hybridized by Henry Marshall (of the Research Station in Morden, Manitoba) in 1962 and introduced by Agriculture Canada at Morden. Does that make it a Parkland rose? Thanks for any light you can shed on this question.

RHA Newsletter 8(4): 13-14 (1977)
Excerpt Canadian Rose Annual, 1976
BREEDING for WINTER HARDINESS and COLOR in ROSES
H. H. Marshall
Canada Department of Agriculture, Research Station, Morden Manitoba.
The main reason R. arkansana has not been used more often as a parent is probably because of difficulty in obtaining the first cross. There are strong interspecific sterility barriers between R. arkansana and cultivated roses but a few Floribunda roses such as 'Donald Prior' will accept R. arkansana pollen. First generation hybrids are often moderately fertile and may be crossed to sister plants or back to either parent.
...
'Assiniboine' is first generation 'Donald Prior x R. arkansana (red form), It has been backcrossed to both parental types and also to several hybrid teas and numerous combinations of the resulting hybrids have been made.

The Canadian Rose Annual (1967) pp. 102-104
Progress in Hardy Everblooming Roses
PERCY H. WRIGHT
Saskatoon, Sask.

The prairie tetraploid species, suffulta, easier to blend with Hybrid Teas to produce fertile or partly fertile hybrids than rugosa just because it is a tetraploid, has recently been used in crosses with both Hybrid Teas and Floribundas, crosses which seem to be easy enough to achieve if suffulta is used as the pollen parent. One of the most interesting of the Suffulta Hybrids, Assiniboine, was originated when H. Marshall of the Brandon Experimental Farm put pollen of suffulta on the pistils of Donald Prior. Assiniboine is of very different character from the rugosa hybrids, and better in several important characters. It is, however, less hardy than Hansa. When moisture is sufficient, it re-blooms profusely in August, at least in the latitude of northern Saskatchewan. Since its male parent Donald Prior is only a semidouble, Assiniboine is semidouble too. This defect will almost certainly be remedied in future breeding.