Family: Poaceae
tufted hairgrass
[ Aira cespitosa L., moreDeschampsia bottnica (Wahlenb.) Trin., Deschampsia caespitosa P.Beauv., orth. var., Deschampsia caespitosa subsp. genuina (Rchb.) O.H. Volk, orth. var., Deschampsia caespitosa subsp. glauca (C. Hartm.) C. Hartm., orth. var., Deschampsia caespitosa subsp. orientalis Hult+-¼n, orth. var., Deschampsia caespitosa subsp. paramushirensis (Honda) Tzvelev, orth. var., Deschampsia caespitosa subsp. parviflora (Thuill.) K. Richt., orth. var., Deschampsia caespitosa var. abbei B. Boivin, orth. var., Deschampsia caespitosa var. alpicola (Rydb.) Á. Löve & D. Löve & Kapoor, orth. var., Deschampsia caespitosa var. arctica Vasey, orth. var., Deschampsia caespitosa var. glauca (C. Hartm.) C. Hartm., non Regel, orth. var., Deschampsia caespitosa var. intercotidalis B. Boivin, orth. var., Deschampsia caespitosa var. littoralis (Gaudin) K. Richt., orth. var., Deschampsia caespitosa var. longiflora Beal, orth. var., Deschampsia caespitosa var. mackenzieana (Raup) B. Boivin, orth. var., Deschampsia caespitosa var. maritima Vasey, orth. var., Deschampsia caespitosa var. parviflora (Thuill.) Coss. & Germ., orth. var., Deschampsia cespitosa subsp. bottnica (Wahlenb.) Tzvelev, Deschampsia cespitosa subsp. genuina (Rchb.) O.H. Volk, Deschampsia cespitosa subsp. glauca (Hartm.) Hartm., Deschampsia cespitosa subsp. obensis (Roshev.) Tzvelev, Deschampsia cespitosa subsp. orientalis Hultén, Deschampsia cespitosa subsp. paramushirensis (Honda) Tzvelev, Deschampsia cespitosa var. abbei B.Boivin, Deschampsia cespitosa var. alpicola (Rydb.) Á.Löve, D.Löve & B.M.Kapoor, Deschampsia cespitosa var. arctica Vasey, Deschampsia cespitosa var. bottnica (Wahlenb.) Vasey, Deschampsia cespitosa var. glauca Regel, Deschampsia cespitosa var. intercotidalis B.Boivin, Deschampsia cespitosa var. littoralis (Gaudin) K. Richt., Deschampsia cespitosa var. longiflora Beal, nom. superfl., Deschampsia cespitosa var. mackenzieana (Raup) B.Boivin, Deschampsia cespitosa var. maritima Vasey, Deschampsia cespitosa var. pallida (Klett & Richt.) Godr., Deschampsia cespitosa var. parviflora (Thuill.) Coss. & Germ., nom. superfl., Deschampsia glauca Hartm., Deschampsia mackenzieana Raup, Deschampsia obensis Roshev., Deschampsia paramushirensis Honda, Deschampsia pumila Woronow ex Grossh., Deschampsia sukatschewii (Popl.) Roshev.] |
Densely tufted perennial 3-12 dm; lvs mostly below the middle of the stem, the blades flat or folded, 1-5 mm wide, ligules often elongate to 3-12 mm; infl loose and open to narrow and contracted, the lower branches in fascicles of 2-5; spikelets purplish or silvery, 2.3-5.7 mm, the first glume 2-5.1 mm, the second 2.7-5.3 mm, acute or obtuse and often erose-tipped; rachilla prolonged one-fourth to one-half the length of the upper floret; lemmas glabrous, usually truncate and 4- toothed, the awn attached below the middle, straight or nearly so, from shorter than to barely exceeding the lemma; palea bifid, anthers 1.3-2.3 mm; 2n=24-28, 52, 56. Wet or boggy ground; circumboreal, s. to N.J., W.Va., N.C., Ill., Minn., and Ariz. A complex sp., the vars. not yet well understood.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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