cyperus rotundus coco-grass, java grass, nut grass, purple nut sedge, purple nutsedge

cyperus rotundus java grass alternifolius background biological biology botanical botany chruk closeup cocograss involucratus flora flowers food horticulture khmer kravanh leaves medical natural nature nut nutsedge palm papyrus perennial plant pond purple sedge red scientific name tree umbrella us water coco-grass