This is the native Raspberry, Rubus parvifolius; I got the id many years ago from the Botanical Gardens. I couldn't find the species in the drop down list of shrubs. Hard to say how many stems/plants.
thanks Betty I wouldn't have thought to look into mistletoes and climbers, perhaps because the rabbits prune these native raspberries always into short neat shrubs that never make it to vines or flower. This year is unusual - perhaps we see a flower for the first time since 2005.