Northern Prairie Wildlife Research Center
Western Wetland Flora
Field Office Guide to Plant Species
Cotula coronopifolia L.
- Family: Composite (Compositae)
- Flowering: March-December
- Field Marks: This rather fleshy plant is distinguished by its bright yellow flower heads that consist only of disk flowers. The smooth leaves are usually pinnately lobed and up to 3 inches long.
- Habitat: Salt marshes, along streams, often in mud.
- Habit: Perennial herb, rooting at the lower nodes.
- Stems: Ascending to spreading, rather fleshy, branched, up to 1 foot long, smooth.
- Leaves: Alternate, simple but usually pinnately lobed, linear to oblong, up to 3 inches long, smooth, sessile or even slightly clasping at the base.
- Flowers: Borne in heads, with usually 1 head from the axils of the uppermost leaves, the head up to 1/2 inch across, bright yellow, consisting only of disk flowers; bracts oblong, with 3-5 veins.
- Sepals: 0.
- Petals: 4, bright yellow, united to form tubular disk flowers.
- Stamens: 5.
- Pistils: Ovary inferior, smooth.
- Fruits: Achenes winged or unwinged, up to 1/10 inch long, without a tuft of soft bristles at the tip.
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