Knife Cut

Deciduous and Tall Grass Prairie

Jewelweed or Spotted touch-me-not

• Impatiens capensis
• Found in wet shady soil 
• Active chemical ingredient is lawsone(Source)
• lawsone: a yellow crystalline dye C₁₀H₅O₂(OH) obtained especially from leaves of Egyptian henna; 2-hydroxy-1,4-naphthoquinone(Source)

(Source)

• Used crushed leaves are poulticed on recent poison ivy rash. mucilaginous stem juice, harvested before flowering also applied to rash. poultice remedy for bruises, burns,cuts, eczema, insect bites, sores, sprains, warts, ringworm.(Peterson Field Guide)

Deciduous:
Sweet or Black Birch Tree

• Betula lenta
• Found in rich woods
• Active chemical ingredient is methyl salicylate(Source)
• methyl salicylate: methyl salicylate a natural or synthetic oil with a characteristic wintergreen odor and taste; used as a counterirritant in ointments or liniments for muscle pain and  also as a flavoring agent. Called also wintergreen oil(Source)

(Source)

• Used for fragrance, in bark tea for fevers, stomachaches, lung ailments, twig tea for fever. to alleviate pain or sore muscles, the oil is applied.

Prairie:

Asiatic Dayflower

• Commelina communis
• found in waste places
• active chemical ingredeint is P-coumaric-acid(Source)
• one of a series of aromatic acids, related to cinnamic acid, the mostimportant of which is a white crystalline substance, HO.C6H4.C2H2.CO2H,obtained from the tonka bean, sweet clover, etc., and also producedartificially(Source)

• (Picture Source)

• leaf tea gargled for sore throats
• roots used for fevers
• leaves were eaten as greens, also reduces pain, used for lung ailments(Peterson Field Guide)

Deciduous and Prairie:

American Hazelnut

• Corylus americana
• found in thickets

active chemical ingredient is Caffeic-acid(Source)

• Caffeic-acid: :  a yellow crystalline acid C₉H₈O₄ obtained by hydrolysis of chlorogenic acid(Source)
(Source)

• Cherokee drank bark tea for hives, fevers; astringent, also emetic
• Bark poultice  used to close wounds and cuts and to treat tumors, old sores, and skin cancers(Peterson Field Guide)