berries berry bush cultivar food fruit garden hybrid juicy plant red Rubus fruticosus x R. idaeus summer Tayberries Tayberry aggregate-fruit color colors colour colours common cultivars diverse drupelets edible etaerio European-raspberry frersh genus-rubus hairy healthy idaeobatus nutritional nutritious perennial pistils raspberries raw red-raspberry Rosaceae rose-family rubus-idaeus soft superspecies surface surfaces sweet tender texture textured textures tiny-hairs varieties variety