AQUATIC WEED IDENTIFICATION Purple Loosestrife Water Willow Water Primrose
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- Magdalene Marsh
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1 Purple Loosestrife Water Willow Water Primrose Leaves are slightly heart-shaped at the base, coming to a point at the leaf tip. Leaves are small and more numerous near the tip. Leaves are long, narrow and tapered at each end. Branched veins are evident. Edges are smooth. Leaves are lance-shaped with smooth edges. Veins in the leaves are evident. Stems and leaves are hairy. Shore-Klear Liquid (G) Smartweed Bulrush American Lotus Leaves are oblong and smooth on the edges. Stems are distinctly jointed Leaves may or may not be present. If present, they appear as a continuation of the stem. Floating leaves are circular with stems attached to the center of the leaf underside. Aquacide Pellets (G) Aquathol Super K
2 Spatterdock Cattail Water Pennywort Leaves are heart-shaped at the base, shiny and smooth. Some leaves float but most stand above the water. Leaves are tall and flat. Stems are tall, round and unbranched Shore-Klear Liquid (E) Leaves are round with low rounded lobes attached at the center to a stem. About the size of a half dollar Sago Pondweed Large-Leaf Pondweed Floating-Leaf Pondweed Leaves are heart-shaped at the base. Veins are very fine and numerous Submersed leaves are thread-like and far apart on the stem. Leaves are long and flat with parallel veins. Stems are tall and round with alternately arranged leaves.
3 Milfoil Parrot Feather Coontail Leaves whorled in groups of four. Each leaf is divided into many thread-like leaflets extending from a central rib. Forms tangled mats at the surface. A type of Milfoil. Leaves whorled in groups of four to six. Each leaf is divided into 18 pairs of thread-like segments resembling a feather. Leaves whorled around the stem and have a serrated appearance. Spacing between leaf whorls is variable. Weeds may be long and sparse or bushy. Elodea Hydrilla Bladderwort Similar to Hydrilla. Leaves whorled in groups of three. Elodea leaves have a smooth edge. Hydrilla has leaves whorled in groups of three or more. Leaves have a serrated edge with two to three pointed spines on the midrib of the underside. Finely divided leaves scattered along the stem with numerous bladder-like structures on leaves.
4 Horned Pondweed Bushy Pondweed Leafy Pondweed Leaves are long and thread-like. Oppositely arranged on the stem unlike other pondweeds. Leaves are narrow with tiny spines along the edges. Leaves slightly enlarged at the base. Stems slender with frequent branching. Short grass-like leaves that measure one to three inches long and branch freely on a slender stem. Leaves are alternately arranged on the stem. Excellent, G=Good, F=Fair Sago Pondweed Large-Leaf Pondweed Floating-Leaf Pondweed Leaves are stiff, narrow and threadlike. Stems branched with leaves alternately arranged on the stem. Spreading leaves resemble a fan with an overall bushy appearance. Leaves are both floating and submersed. Submersed leaves are large, oblong, wavy and taper to the stem. Leaves are both floating and submersed. Submersed leaves long and narrow. Floating leaves oblong and slightly heart-shaped at the base.
5 Curly-Leaf Pondweed Clasping-Leaf Pondweed Leaves are thin with wavy and finely serrated edges. Stems are branched. Upper leaves are often crispy and appear waxy. Leaves are wide and wavy with smooth edges. Broad leaf base clasps the stem. The upper stem is commonly branched and leafy.
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