Winter bentgrass

Agrostis hyemalis, known as winter bentgrass or ticklegrass, is a tufted perennial grass in the family Poaceae, native to North America. The plant forms loose clumps 30-80 cm tall with slender, erect culms arising from a fibrous root system without rhizomes. Leaf blades are narrow, flat to involute, 1-3 mm wide and 5-15 cm long, with rough margins; the ligule is membranous and 1-3 mm long. The inflorescence is a very large, diffuse, open panicle, often more than half the plant's total height, with delicate, capillary branches in distant whorls that spread widely at maturity, giving the plant a hazy, cloud-like appearance. The tiny single-flowered spikelets, about 1.5-2 mm long, are borne near the tips of the branches; glumes are unequal, narrow, and acute, and the lemma is awnless or with a minute awn. It occurs in open meadows, prairies, savannas, and disturbed sandy ground across temperate North America.