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  1. Descriptor:           (show all)

    Infestation (45)
    Plant(s) (39)
    Foliage (16)
    Flower(s) (8)
    Dispersal (1)

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    United States (108)
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    Leslie J. Mehrhoff (75)
    USDA APHIS PPQ Archive (6)
    Cleveland Metroparks (4)
    California Department of Food and Agriculture Archive (3)
    Chris Evans (3)

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Natural Resources: Weeds

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111 Images of 5 Subjects View Subject List View Image Details View Thumbnails

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Subject Scientific Name Images
Brazilian waterweed Egeria densa 13
common frogbit Hydrocharis morsus-ranae 2
duck-lettuce Ottelia alismoides 8
hydrilla Hydrilla verticillata 87
oxygen weed Lagarosiphon major 1

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