Northern Prairie Wildlife Research Center
Southern Wetland Flora
Field Office Guide to Plant Species
Rhynchospora corniculata (Lam.) Gray
- Family: Sedge (Cyperaceae)
- Flowering: June-September
- Field Marks: This beaked-rush has a long beak terminating the achene, but the bristles that
subtend the achene are only 1/6 inch long. This is a robust plant that will grow up to 7 feet tall.
- Habitat: Wet to saturated soil in marshes, openings in swamps, ditches, margins of ponds, lakes,
bayous, and other wet soil situations.
- Habit: Perennial herb with fibrous roots.
- Stems: Upright, triangular, smooth, unbranched, up to 7 feet long.
- Leaves: Long, narrow, flat, rough along the edges, up to 2/3 inch wide.
- Flowers: Borne in spikelets, the spikelets arranged in terminal and axillary umbels as much as 1
- Spikelets: 1-flowered, up to 1/2 inch long, with lanceolate, pointed scales.
- Stamens: 3.
- Pistils: Ovary superior; style 2-cleft.
- Fruits: Achenes obovate, flat, dark brown, about 1/10 inch long, with a long, terminal beak up
to 1 inch long, subtended by 2-6 bristles about 1/6 inch long.
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