Forest Blue Grass, more...wood bluegrass, Woodland Bluegrass
[Agrestis alba, moreAgrostis alba f. alba L., Agrostis aristata Sinclair ex Steud., pro syn., Agrostis stolonifera f. alba (L.) Schur, Agrostis stolonifera var. alba (L.) Kuntze, Agrostis vulgaris var. alba (L.) Gatt., Festuca depauperata Bertol., Poa asperula Steud., Poa kamtschatica Fisch. ex Komarov, Poa lapponica Prokudin, Poa pratensis var. fagetorum Rech. f. & Scheff., Poa tenuis]
Culms slender, tufted, 4-8 dm, without rhizomes; lvs lax, 1-2 mm wide, often divergent, often some of them above the middle of the shoot, the upper scarcely shorter than the lower; ligule truncate, 0.5 mm; infl narrowly ovoid, 1-2 dm, eventually loose and open, the slender branches in sets of ca 5, bearing spikelets in the distal half; spikelets 2-4-fld; glumes narrowly lanceolate, long-acuminate, the first 2.2-3 mm, conspicuously narrower than but nearly equaling the first lemma, the second 2.3-3.3 mm; lemmas apparently 3-veined (the intermediate veins obscure), 2.1-3.1 mm, webbed at base, the straight keel and marginal veins sericeous or villosulous below; glabrous or scabrous in the distal third; rachilla evidently puberulent at 30 anthers 1.2-1.6 mm; 2n=28-70. Native of Europe, intr. across the continent in s. Can., and occasionally found in moist meadows and along roadsides throughout most of our range.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.