Northern Prairie Wildlife Research Center
Northeast Wetland Flora
Field Office Guide to Plant Species
Juncus megacephalus M.A. Curt.
- Family: Rush (Juncaceae)
- Flowering: June-August
- Field Marks: This rush is distinguished by its ribbed leaves, its uppermost leaf with the blade
much shorter than the sheath, and its large, reddish brown, spherical heads usually at least
1/2 inch in diameter.
- Habitat: Brackish or fresh-water marshes.
- Habit: Perennial herb from rather thick rhizomes.
- Stems: Upright, rather stout, smooth, up to 3 feet tall.
- Leaves: Terete, ribbed, smooth.
- Flowers: Up to 40, crowded into spherical heads at least 1/2 inch in diameter, with a short bract at the base.
- Sepals: 3, lanceolate, reddish brown, free from each other, up to 1/4 inch long, longer than the petals.
- Petals: 3, lanceolate, reddish brown, free from each other, less than 1/4 inch long, shorter than the sepals.
- Stamens: 3.
- Pistils: Ovary superior, smooth.
- Fruits: Capsules ellipsoid, pointed at the tip, somewhat triangular, about 1/4 inch long, slightly longer than the perianth; seeds pointed at both ends.
- Notes: The seeds are eaten by waterfowl.
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