Northern Prairie Wildlife Research Center
Western Wetland Flora
Field Office Guide to Plant Species
Carex douglasii Boott
- Family: Sedge (Cyperaceae)
- Flowering: May-August
- Field Marks: The crowded spikes are up to 3/4 inch long and are either male or female, with the two sexes usually on separate plants. The perigynia are up to 1/5 inch long, with a prominent beak.
- Habitat: Wet or dry prairies, ditches, tolerating alkaline conditions.
- Habit: Perennial herb with long, slender rhizomes.
- Stems: Upright, unbranched, up to 18 inches tall, without hairs.
- Leaves: Male and female flowers borne in spikes, usually on different plants or, if on the same plant, the male flowers at the top of the spike and the female flowers at the bottom spikes severely crowded into a head up to 2 inches long, each sp
- Sepals: O.
- Petals: O.
- Stamens: 3.
- Pistils: Enclosed in a perigynium, each perigynium ellipsoid to ellipsoid-ovoid, up to 1/5 inch long, tapering to a prominent and minutely toothed beak at the tip, straw-colored to
brown; stigmas 2.
- Fruits: Achenes lenticular, up to 1/10 inch long, smooth.
- Notes: The achenes are eaten by birds. This species is a forage plant for livestock.
Previous Species -- Lesser Panicled Sedge (Carex diandra )
Return to Species List -- Group 3
Next Species -- Kellogg's Sedge (Carex kelloggii)