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Jointed Rush (Juncus nodosus)

• Family: Rush (Juncaceae)
• Flowering: July-August.
• Field Marks: Jointed rush has terete, hollow leaves and flowers borne in spherical heads up to 1/4 inch in diameter with the sepals about as long as the petals.
• Habitat: Sandy banks of rivers and streams.
• Habit: Perennial herb with rhizomes.
• Stems: Erect, smooth, unbranched, up to 2 feet tall.
• Leaves: Elongated, terete, hollow, the uppermost leaves overtopping the clusters of flowers.
• Flowers: Borne in spherical heads up to 1/4 inch in diameter, with up to 30 heads per stem.
• Sepals: 3, greenish brown, tapering to a slender point, up to 1/6\10 inch long.
• Petals: 3, greenish brown, tapering to a slender point, up to 1/6\10 inch long.
• Stamens: 6.
• Pistils: Ovary superior.
• Fruits: Capsules lanceoloid, tapering to a narrow point, longer than the sepals and petals.