Sparganium chlorocarpum Rydb.
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Authority
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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Family
Typhaceae
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Scientific Name
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Description
Species Description - Ordinarily erect, 0.5–6 dm; lvs usually much exceeding the stem, the lower distichously imbricate, erect or nearly so, flat or somewhat keeled, 2–7 mm wide, little or not dilated at base; bracts shorter, usually conspicuously erect or strongly ascending; infl unbranched; pistillate heads 1–4; usually crowded, sessile or the lowest short-peduncled, the lowest usually supra- axillary; tep spatulate, two-thirds as long as the achene; achene greenish-brown to brown, shining, fusiform, the body 4–6 mm, tapering to a conspicuous beak about as long, staminate part of the infl usually 4–10 cm, the heads few–several, not crowded; 2n=30. Swamps, muddy shores, and shallow water; Nf. and Que. to Ida., s. to W.Va., Ind., and Io. (S. acaule, a depauperate form)