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Bighead rush facts for kids

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Bighead rush
Scientific classification
  • Juncus scirpoides var. carolinianus Coville
  • Juncus scirpoides var. echinatus Engelm.

Juncus megacephalus, the bighead rush, is a plant species native to the United States. It is known from every seacoast state from Texas to Maryland, as well as Massachusetts, growing in freshwater marshes, sand dunes, and disturbed sites at elevations less than 100 m.

Juncus megacephalus is a perennial herb spreading by means of underground rhizomes. Erect stems are round in cross-section, 3–4 mm in diameter, up to 110 cm tall. Leaves are up to 24 cm long. Inflorescence is a panicle of up to 20 heads. Each head is spherical, about 10 mm in diameter, with about 50 flowers. Flowers are straw-colored, about 20 mm in diameter.

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