Juncus coriaceus Mack.

Stems densely cespitose, 4–10 dm, erect or decurved above, often surrounded by old basal sheaths; lvs all basal except the invol one; sheaths firm, often darker upwards, with firm rounded auricles; blades elongate, subterete, narrowly channeled on the upper side; invol lf erect, resembling the stem but channeled, 1–2 dm; infl 2–4 cm; fls prophyllate; tep lance-ovate, acuminate, widely spread by the fr, 3.3–4.5 mm; fr 3–4 mm, globose-ovoid, only obscurely angled, shining brown, unilocular, with narrow partial partitions, scarcely dehiscent, occasionally with a slender beak to 1 mm; seeds 0.5–0.8 mm, substipitate, angularly obconic or turbinate, evidently ribbed vertically and with finer cross-ridges. Wet ground, swamps, or brackish marshes; N.J. to Fla., and Tex., n. in the interior to Ky. and Okla. (J. setaceus, misapplied)

Can be grown by divisions or seedlings.