Poa humilis

Poa humilis, sometimes treated as a subspecies of Poa pratensis (P. pratensis subsp. irrigata), is a low rhizomatous perennial grass in the family Poaceae native across Europe and much of temperate Asia, and naturalized in parts of North America. Plants form loose, slowly creeping turf 10-30 cm tall arising from slender underground rhizomes. The culms are erect, smooth, and round in cross-section. Leaf blades are flat or folded, soft, 1-3 mm wide, and bluish-green, with a short blunt ligule no more than 1 mm long. The inflorescence is an open to somewhat contracted panicle 3-8 cm long, with spreading lower branches typically borne in pairs or threes at each node, each bearing several ovate, laterally compressed spikelets 3-6 mm long. Each spikelet contains 2-5 florets with glabrous to slightly webbed lemmas. Flowering takes place from May to July. The species inhabits damp meadows, riverbanks, lawn margins, and lightly grazed pasture on a wide range of soils, often where ground moisture is reliable.