Rosa pimpinellifolia L.
[= Rosa spinosissima]
Annotated by M. Schowalter, August 2014.

Yukon Territory: Whitehorse, Riverdale "The V". Elev. 650 m
60.711094°, -135.032347°
Loose sand. Sandy dune growing with Astragalus tenellus, Penstemon gormanii, and P. procerus. Originally identified as R. woodsii in the field, then named R. acicularis by B.A. Bennet, August 2009. Reidentified as R. spinossisima L. (aka R. pimpinellifolia L.). Likely escaped from cultivation- Margit Schowalter, August 2014. Leaflets 9, quite unusual for Yukon plants. Locally common. 1 duplicate.

B.A. Bennett 09-0033, June 23, 2009
With S.L. Bennett, R.S. Mulder
BABY, Accession: BABY-06853