Broadleaf phacelurus

Perennial, 80-120cm tall. Liversides, Lakesides, wetlands. Korea, Japan, China. Leaf blades linear-lanceolate, tough, lengths 20-40㎝, widths 1-4cm, glabrous or sparsely appressed-pilose, base rounded, margins scaberulous, apex attenuate. Racemes up to 20 cm, stiffly suberect, often white-powdery; lower glume linear-lanceolate, leathery, back concave, margins keeled, keels scabrid; upper glume spinulose on keel toward apex.