The essential ingredients that justify the adjective are red summer berries such as redcurrant, blackcurrant, raspberries, strawberries, blackberries, bilberries and stoned black cherries.
The most abundant tree species is Sessile Oak (Quercus petraea), the shrub layer is very sparse and the ground flora includes Bracken, Bilberry and a variety of mosses.
Vaccinium deliciosum (also called Cascade bilberry or Cascade huckleberry), Western United States and British Columbia, Canada - a bilberry
The larva is reddish brown with black markings and usually feeds on the foliage of mugwort, although it has also been recorded feeding on Angelica, bilberry, tansy and yarrow.