- Contact information
For information on Lakes in Wisconsin, contact:
- Wisconsin DNR Lakes
Division of Water
Bureau of Water Quality
- Aquatic Invasive Species Contacts
Yellow Floating Heart - Delavan Lake
- Date First Found
- Location First Found
Two stormwater ponds located adjacent to Delavan Lake outlet. One pond drains directly to the lake.
- Original Extent
Widespread, covering most shallow areas of lake
Yellow Floating Heart
Yellow Floating Heart is an herbaceous, perennial, aquatic plant that has long, branching stems up to 0.1 inch thick. It often covers the water surface with long-stalked heart-shaped leaves. Its leaves are typically opposite and unequal, shaped like a rounded heart, and measure 2-6 inches in diameter. It has bright yellow flowers that rise a few inches above the leaves. Its flowers have five petals with fringed edges, and measure 1-1.5 inches in diameter. The seeds of this plant are contained in beaked capsules that measure 0.5-1 inch in length. The seeds themselves are flat and oval in shape and have ciliate margins that measure 0.1 inch in length.