Scientific NameLeersia oryzoides
Other Common Names:
Synonyms (former Scientific Names):
Leaf blades are 7 to 30 cm long, 6 to 15 (20) mm wide, and yellow-green in color. They have a coarse or rough upper surface and are lined with tiny teeth along the margins.
Rice cutgrass is a native cool season grass that grows and flowers comparatively late in summer. The seed ripens in late August to early October, more typical of a warm season species. This short- to medium-lived perennial spreads by scaly, underground rhizomes and often forms dense colonies. The stalks (stems) are upright to sprawling, velvety at the nodes (joints), and 90 to 125 (150) cm tall.
Flower Seed Head
The flowerhead (panicle) is open, often drooping, and 10 to 20 cm long. Some panicles remain enclosed within the lower leaf sheaths and release seeds upon decay of the stem. The seed hull is covered with minute bristles that readily cling to clothing or fur for dispersal.
Rice cutgrass is widespread across southern Canada and most of the United States. It is also found in the warmer parts of Europe.
Leaf Hair on Upper Surface
hairs from base to tip
rolled in bud
Mature Leaf Width
less than 5 mm,
6 to 15 mm
less than 1 mm,