席草为莎草科莎草属多年生宿根性植物,有地上茎和地下茎。地上茎青绿色,呈三角形,直立于地面。地下茎红褐色,圆形,茎体被复鳞片。根着生在二茎交接处或地下茎上,初生时为白色,老后为红褐色。叶为直出平行脈,有二种,一种着生在地上茎的顶端,共三 Scholar grass for the sedge Ke Sha grass genus perennial root plants, aboveground stems and underground stems. Ground stem turquoise, triangular, erect on the ground. Underground stems reddish brown, round, stems were complex scales. Roots born in the junction of two stems or underground stems, white at birth, old reddish brown. Leaves straight parallel vein, there are two, one was born in the top of the ground stem, a total of three