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Convolvulus arvensis (Morning glory)

Convolvulus arvensis (Morning glory), in situ (black and white)

Cucumis melo (Muskmelon) specimen (handcolored), including flowers, fruit, and leaves, identified as negative 1410

Cucumis melo (Muskmelon) specimen (handcolored), including flowers, fruit, and leaves, identified as negative 1410

Data reflecting quantity of plant material above and below ground in tons per acre, dry weight

Data reflecting quantity of plant material above and below ground in tons per acre, dry weight

Dicentra cucullaria (Dutchman's breeches), in situ (black and white)

Dicentra cucullaria (Dutchman's breeches), in situ (black and white)

Drosera rotundifolia (Sundew) specimen (black and white), Little Point Sable, Michigan, created by the University of Chicago

Drosera rotundifolia (Sundew) specimen (black and white), Little Point Sable, Michigan, created by the University of Chicago

Ebenaceae (Persimmon) trees near Austin, Texas (black and white)

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