We are in the process of gathering images of the various plants listed below.
 

Aconite
Agar
Aloe
Alum Root
Ambrosia (Ragweed)
Anise
Arnica
Arrowroot
Asafoetida
Balm of Gilead
Balsam of Peru
Belladonna
Benzoin
Black Haw
Black Root
Black Snake Root
Blackberry
Blood Root
Buchu Leaves
Burdock
Calamus
Calisaya
Camphor
Capsicum
Cascara
Castor Bean
Catnip
Chamomile
Cedar
Cinnamon
Clover
Cloves
Coffee
Dogfennel
Dogwood
Elder
Eucalyptus
Fennel
Foxglove
Ginger (Wild)
Ginseng
Golden Seal
Horehound
Indian Turnip
Ipecac
Juniper
Lavender
Licorice
Lobelia
Mandrake
Milkweed
Mullein
Mustard
Myrrh
Olive
Opium
Passion Flower
Peppermint
Peruvian Bark
Plantain
Poke
Prickly Ash
Psyllium
Pumpkin Seed
Rhubarb
Sarsaparilla
Sassafras
Senna
Slippery Elm
Snake Root
Squill
Stillingia
Strychnine
Sweet Gum
Tobacco
Tolu
Valerian
Verbena
Wild Cherry
Willow
Wintergreen
Witch Hazel
Yellow Dock
Yellow Root
Yellow Saffron