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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Yellow Flag

Small group of yellow flag along the water.

Yellow flag has tall leaves, three to four feet, that arch at the upper parts and come to a point. Yellow flowers are big and showy, with many on each stem.

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Northern Wild Rice

Northern wild rice groups growing in shallow water.

Northern wild rice has tall reed like stems, ribbon like leaves that float, and branching flowers with yellow to deep red fruits (edible grains).

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Annual Wild Rice

Annual wild rice in a field.

Annual wild rice has tall thick stems, large strap like leaves, branching flowers up to two feet long, and yellow or reddish fruits (edible grains).

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Watercress

Watercress over water.

Watercress stems and leaves are medium green. Young leaves are simple while mature leaves are compound with three to 11 leaflets.

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Water Spinach

Water spinach in large group covering water.

Water spinach is a trailing vine with milky sap. Alternate leaves are usually arrowhead shaped and grow to seven inches long with pointed tips.

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Sweetflag

Close up of sweet flag flower.

Sweetflag leaves grow in clusters from horizontal underground stems. Simple leaves are bright green and up to six feet long.

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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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Spikerush

Spikerush in a group.

Spikerush stems are straight and grow in clusters from the rhizomes. There are no leaves; flowers grow atop the stems.

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Smooth Waterhyssop

Close up of smooth waterhyssop flowers and leaves.

Smooth waterhyssop has many branches with bright green leaves that are succulent and thick. Small white flowers can be tinged with blue or pink.

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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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Reed Mannagrass

Reed mannagrass in a field.

Reed mannagrass has light green stems that can be more than eight feet tall. Rough leaves are angled out of the stem and grow nearly two inches wide.

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Reed Canarygrass

Reed canarygrass in a field.

Reed canarygrass has tall round stems with alternate leaves that are tapered. Straw colored seed heads grow at the tops of the stems.

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Pond Sedges

Pond sedge in groups growing out of the water.

Pond sedges grow six inches to four feet tall. Leaves have pointed tips and sometimes bend over. Flower spikelets grow in a spiral and are usually brown.

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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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