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Juncus megacephalus
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 meters (330 ft).
Juncus megacephalus is a perennial herb spreading by means of underground rhizomes. Erect stems are round in cross-section, 3–4 mm (0.12–0.16 in) in diameter, up to 110 cm (43 in) tall. Leaves are up to 24 cm (9.4 in) long. Inflorescence is a panicle of up to 20 heads. Each head is spherical, about 10 mm (0.39 in) in diameter, with about 50 flowers. Flowers are straw-colored, about 20 mm (0.79 in) in diameter.
Dwarf Rush · Rush · Tapertip rush · Sharpflower rush · Spiny rush · Northern green rush · Antarctic rush · Arctic rush · Jointleaf rush · Austral Rush · Mexican Rush · Baltic Rush
Text excerpted from the Wikipedia article Juncus megacephalus by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
