Common Hard Rush (Juncus Glaucus, Ehrh. = J. Inflexus, L.)

The habitat of this plant is wet, stiff soils, wet places. The plant has the rush habit. The stem is coarsely, deeply furrowed, slender, rigid, bluish-green. The pith is interrupted. The sheaths are dark. The leaves, if present, are reduced. The panicle is much-branched, loose. The perianth-segments are narrow, linear, lance-shaped, awl-like, as long as the capsule. There are 6 stamens. The capsule is black, ovoid, elliptic to oblong, mucronate. The plant is 1-3 ft. high, flowering in July and August, and is a herbaceous perennial.

Thread Rush (Juncus Filiformis, L.)

The habitat of this plant is lake margins, stony and gravelly margins of lakes. The plant has the rush habit. There is a creeping roocsiock. The stems are slender, finely furrowed, wiry, pale-green. The pith is interrupted. There are no leaves. The panicle or cyme is small, stalkless, with few flowers, about the middle of the stem. The perianth-segments are longer than the capsule, lance-shaped, acute. There are 6 stamens, with anthers shorter than the anther-stalks. The capsule is blunt, top-shaped, with a short, abrupt point. The seeds are very small. The plant is 6-8 in. in height, flowering in July and August, and is a herbaceous perennial.