idaeus), dewberry (Rubus caesius), wild strawberry , and the somewhat less palatable dogwood (Cornus sanguinea), hawthorn ( Crataegus monogyna and oxyacantha), rowanberry (Sorbus aucuparia), crab apple and rose hips. Some seeds usually made into gruel in historical times are acorn and manna grass (Glyceria fluitans). Roots of the sea beet ,