common hazel, purple form corylus avellana l. h. karst. f. purpurea, a general species. spring garden

anybody avellana betulaceae birch blue burgundy bush color common corylus crimson day deciduous family flora foliage form fruit garden gardenfilbert general grove hazel karst krone leaf leaves monoecious nobody nut ordinary people plant purple purpurea site sky species spherical spring