Carex kobomugi Ohwi
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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
Cyperaceae
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Scientific Name
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Description
Species Description - Usually dioecious; stems very stout, 1–3 dm; lvs yellow-green, stiff, 3–6 mm wide, rough-margined, surpassing the stems; spikes numerous, sessile, densely aggregated into a head that appears almost as a single spike, the staminate heads oblong-cylindric, 3–4 × 1–2 cm, the pistillate ovoid, 3–6 × 2–4 cm; scales acuminate into a stout, often elongate cusp; perigynia ± erect, dark, lance- ovate to elliptic, thickly planoconvex, spongy-thickened below, 10–14 mm, evidently multinerved, the infolded margins lacerately toothed, the beak smooth, sharply bidentate, nearly as long as the body; achene 4–7 mm, unequally trigonous; stigmas 3. Native of e. Asia, intr. in coastal sands from Mass. to Va.