cluster of black bamboos (phyllostachys nigra) in a park : (pix sanjiv shukla)

black bamboo purple phyllostachys nigra poaceae gramineae species flowering plant grass native hunan province china cultivated tall clumps slender arching canes lanceshaped leaves long running underground rhizomes dense hedge privacy screen ornamental numerous forms cultivars garden royal horticultural society award merit lumber timber food musical instruments isolated nature natural internodes stem