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Species
Information
- yellow floating heart
- Nyphoides peltata (Gmel.) Kuntze
- USDA
Symbol: NYPE
- Oregon
Noxious Weed Designation: A
- Pictures
ALERT: PLEASE CALL 1-866-INVADER IF YOU SUSPECT YOU HAVE FOUND THIS SPECIES IN OREGON
Identification: Aquatic perennial. Grows rooted to the bottom in water depths of 2-13 feet. Floating leaves heart-shaped to circular, 1 to 4 in long, purplish underneath with slightly wavy margins. Leaves attached to long stalks that arise from creeping underwater rhizomes. Flowers bright yellow, 5-petaled, and 1 to 1 1/4 inch in diameter. Reproduces by seed and by rooting at nodes and will regenerated from plant fragments. In Oregon there is one known location in Washington County
Impacts: Yellow floating heart grows in dense patches, excluding light for native species and creating stagnant areas with low oxygen levels underneath the floating mats. These mats make it difficult to fish, water ski, swim or paddle.
Biological
Controls: Biological control agents are not used on "A" listed weeds in Oregon. This weed is being managed for eradication.
Oregon
Maps of Yellow Floating Heart Distribution
Links:
USDA
Plants Database information on yellow floating heart
GRIN
Database information on yellow floating heart
Oregon Department
of Agriculture information on yellow floating heart
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