I am not sure that the colour of the hip is relevant. Vicflora states canina hips are dark red and rubiginosa hip are red to almost black. I confirmed it as canina because when I blew up the stem near several of the hips they did not appear to have ever had prickles, and were hairless.
I am not sure that the colour of the hip is relevant. Vicflora states canina hips are dark red and rubiginosa hip are red to almost black. I confirmed it as canina because when I blew up the stem near several of the hips they did not appear to have ever had prickles, and were hairless.
From he thorniness I would have thought Rosa rubiginosa, The more persistent sepals on R. rubiginosa are often a useful feature but at this time of year sepals (and sometimes the leaves) have dropped. I can't enlarge the image to show presence or bsence of ine prickles on the stems of the hips. However they are present on plants I have seen today, so it would be good to take another look at this plant. R. canina is listed as 'doubtfully naturalised' in the ACT Plant Census so it would be a useful observation. I think there is no longer any doubt that it is naturalised.