Wild Parsnip from the Plants series

Poison Hemlock from the Plants series

Louis Prang & Co.

Waterkers (Rorippa of Nasturtium)

Unknown Artist

Water Hemlock from the Plants series

Louis Prang & Co.

Botanical Study of a type of Yellow Gentian (genus Gentiana Major) (recto); Botanical Study of the Ascyrum Hypericoides (verso)

Anonymous, French, 19th century

Botanical Study with a Species of the Nettle Family (genus Urtica)

Anonymous, French, 19th century

Botanical Studies

Anonymous, French, 19th century

Botanical Study

Anonymous, French, 19th century

Poison Ivy from the Plants series

Louis Prang & Co.

Colutea arborescens (almindelig blærebælg); Hippocrepis emerus (busk-hestesko)

Hans Simon Holtzbecker

Lupine (Lupinus)

Unknown Artist

Flower Study

Anonymous, French, 19th century

Thorn Apple or Stramonium from the Plants series

Louis Prang & Co.