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4 Images of 4 Subjects View Subject List View Image Descriptions View Thumbnails

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0024020
0024020

Canada thistle
Cirsium arvense
Research
Norman E. Rees

1355007
1355007

old world climbing fern
Lygodium microphyllum
Research
USDA Agricultural Research Service Archive

1355041
1355041

giant salvinia
Salvinia molesta
Research
Peggy Greb

1355045
1355045

melaleuca
Melaleuca quinquenervia
Research
Stephen Ausmus

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