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Data chart

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

Original Forest Cover Map, Iowa State Planning Board

Plant specimen (black and white), identified as number 1469

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

Erigeron strigosus (Daisy), in situ (Black and white)

Plant, in situ (black and white)

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

Plant specimen (black and white), identified as number 1321

Plant, in situ (black and white)

Plant, in situ (black and white)