Juncus compressus Jacq.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Much like no. 1 [Juncus gerardii Loisel]; primary invol bract usually surpassing the infl; tep oblong to obovate, obtuse, light brown with greenish midstrip and membranous margin, the sep 2–2.5 mm; stamens 6, extending to about the middle of the tep or a bit beyond, the anthers up to ca 1 mm, 1–2 times as long as the filaments; fr obovoid-globose, 2.1–2.6 mm, short-beaked, obviously surpassing the sep; 2n=40, 44. Wet meadows and salt-marshes; native to Europe, now irregularly established from Nf. to Me. and N.H., w. to Wis., Minn., Mont., and Utah.