Yellowcress

Close up of yellowcress flowers in the process of budding.

Yellowcress has branched stems with elongated or sword/oval shaped leaves. Flowers grow on the same branches as leaves and have four bright yellow petals.

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Yellow Floating Heart

Yellow floating heart leaves on water with flowers sticking out.

Yellow floating heart has long leaf stalks and alternate leaves that float on the water. Bright yellow flowers have five petals that look frayed.

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Water Clover

Water clover group floating on water.

Water clover is a type of fern that looks like a four-leaf clover. Two toned leaves have four lobes that may be above or below the water’s surface.

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Spotted Water Hemlock

Spotted water hemlock in a forest.

Clusters of tiny white flowers grow atop this poisonous plant. Spotted water hemlock grows two to six feet tall and has compound leaves.

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Pennsylvania Smartweed

Pennsylvania smartweed close up growing in a field.

Pennsylvania smartweed has sword shaped leaves and small flowers that grow in clusters at the ends of branches. Flowers are rose to white in color.

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Marshpepper Smartweed

Close up of marshpepper smartweed flowers in a small group.

Marshpepper smartweed has dark green sword shaped leaves and flower spikes that droop. The tiny flowers are spaced out and typically green to white.

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Swamp Smartweed

Swamp smartweed in a field.

Swamp smartweed has sword shaped leaves and small flowers that grow in clusters at the ends of branches. Flowers are greenish white with pink tips.

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Salt Grass

Close up of salt grass leaves.

Salt grass has rigid stems and grassy leaves that grow one to six inches long. Tan spikelets hold wide spiky flowers up to three inches long.

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Water Pennyworts

Close up of common pennywort leaves.

Water pennyworts have long thin stems, long thin leaf stalks, and leathery bright green leaves that are mostly circular with frilly edges.

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Mud Plantain

Mud plantain in the water.

Mud plantain’s stems and leaves emerge; leaves are sword or egg shaped and leathery. Flowers have five thin petals and are usually purplish blue.

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Marsh Dewflower

Close up of marsh dewflower.

Marsh dewflower has round stems, lance shaped leaves, and flowers with three petals that are pinkish purple on the edges and white in the center.

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Crested Floating Heart

Crested floating heart flowers and leaves.

Crested floating heart has heart shaped leaves eight inches long and six inches wide and showy flowers with frilly white petals and yellow centers.

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Bur Marigold

Bur marigold flowers and leaves close up.

Bur marigold has round green stems and can grow nearly four feet tall. Leaves have toothed edges. Bright yellow flowers have eight to 15 petals.

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Blue Waterleaf

Blue waterleaf flowers and buds.

Blue waterleaf has thick stems that grow up to three feet tall and have spines on them. Bright blue to purple flowers have five petals. Leaves are pointy.

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Aquatic Forget Me Not

Aquatic forget me not large cluster with flowers.

Aquatic forget me not has lance shaped leaves and pale blue flowers that have five petals each and a yellow center.

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American Water Willow

American water willow growing in a line in a lake.

American water willow has round stems and alternate sword shaped leaves. Flowers have four petals that are violet or white; the bottom one has pink spots.

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American Water Plantain

American water plantain growing at edge of pond.

American water plantain grows on muddy banks and has green elliptical shaped leaves with small pink or white flowers.

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Alligatorweed

Alligatorweed group with flowers growing out of pond edge.

Alligatorweed grows close to the ground with reddish stems and sword shaped green leaves.

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