Agrostis capillaris

Agrostis capillaris, the common bent, colonial bent, or browntop, is a rhizomatous and stoloniferous perennial in the grass family (Poaceae). It is native to Eurasia and has been widely introduced in many parts of the world. Colonial bent grows in moist grasslands and open meadows, and can also be found in agricultural areas, roadsides, and invading disturbed areas. The name Agrostis comes from the Greek word meaning forage plant, agros meaning "a field". It is found growing in neutral to acidic soils. It has a very fine texture and like most bent grasses grows very dense.

From Уикипедия: Agrostis capillaris · CC BY-SA 4.0