Northern Prairie Wildlife Research Center
Northeast Wetland Flora
Field Office Guide to Plant Species
Juncus subcaudatus (Engelm.) Coville & Blake
- Family: Rush (Juncaceae)
- Flowering: July-October
- Field Marks: The distinguishing features of this rush are the septate, cylindrical leaves, the
flowers in hemispherical heads, the pointed sepals and petals, and the seeds with tails on each
end only about 1/3 as long as the body of the seeds.
- Habitat: Bogs, wet woods.
- Habit: Densely tufted perennial with thickened rootstocks.
- Stems: Upright, branched or unbranched, sometimes sprawling, smooth, up to nearly 3 feet tall.
- Leaves: Elongated, cylindrical, septate, about 1/20 inch in diameter.
- Flowers: Borne in heads in loose, open cymes, the cymes up to 10 inches long, with very slender branches, the heads hemispherical, 5- to 20-flowered; flowers greenish, sessile or nearly so.
- Sepals: 3, free from each other, greenish, lanceolate, pointed at the tip, up to 1/6 inch long.
- Petals: 3, free from each other, greenish, lanceolate, pointed at the tip, up to 1/4 inch long.
- Stamens: 3 or 6.
- Pistils: Ovary superior, smooth.
- Fruits: Capsules lanceoloid, brown, up to 1/6 inch long, pointed at the tip, smooth, shorter than or equalling the sepals and petals; seeds narrowly elliptical, about 1/20 inch long, with a white tail at each end about 1/3 as long as the body of the seed.
- Notes: Waterfowl eat the seeds.
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