Yellow Foxtail (Setaria glauca)
- Family: Grass (Poaceae)
- Flowering: June-October.
- Field Marks: This annual foxtail has stiff, erect spikes subtended by bristles that are usually yellowish.
- Habitat: Along streams, along roads, fields, pastures, and most disturbed areas.
- Habit: Annual herb with fibrous roots.
- Stems: Usually erect, smooth, up to 3 feet tall.
- Leaves: Up to 7 inches long, up to 1/3 inch broad, smooth, with smooth sheaths.
- Flowers: One per spikelet, with many spikelets crowded into a straight, erect spike up to 4 inches long; each spikelet subtended by 4-8 straight, stiff, usually yellow bristles up to 1/2 inch long.
- Stamens: 3.
- Pistils: Ovary superior.
- Grains: Usually enclosed by scales.
- Notes: This plant is commonly called pigeon grass in some areas.
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