Shot in community farm, Terra Nova, Richmond. Commonly seen that nobody care to add a label. I lump them all under Rosa nutkana - Nootka Rose. Are they the same as those we saw along roadsides when we drove to Alberta ?
Rosa rugosa, very different morphologically from R. nutkana. (And pretty distinctive within the genus in general). Although there are a few local sites where the two species have clearly crossed, to produce intermediates.
@David Tang, it gets its name from "rugose", meaning wrinkled or puckered, refers to all that texture in the leaves.