Nat. ord., Juncaceae.
Characters. - Root-stock shortly creeping, matted, bearing dense tufts of cylindrical, leafless stems, 2 to 3 feet high, erect, but soft and pliable, sheathed at the base by a few brown scales. Some of these stems remain barren, so as to resemble leaves; others bear, on one side, at 4 to 6 or 8 inches below the top, a densely clustered panicle of small green or brown flowers; the very numerous peduncles vary from a line or two to above an inch in length, the central smaller ones have but 2 or 3 flowers, the others a considerable number in irregular cymes. Perianth segments about 1 line long, very pointed. Capsule about as long, very obtuse, or even notched. Stamens usually 3 only. The loose-flowered variety with the looser panicles, often 2 or 3 inches in diameter, and pale-coloured, is distinguished as J. Effusus.
A proving of this is given by Noack and Trinks.
Part employed. - The fresh root.
Preparation. - Tincture.