Sunburn

Deciduous and Tall Grass Prairie

Red Clover

• Trifolium pratense
• Found in Fields or Roadsides, it is a weed
•  Active Chemical Ingredient is genistein an oestrogen that occurs naturally in soya beans and is believed to inhibit the growth of certain  tumours(Source)
  

(Source)

• A wash made of the flowering tops are used for athlete's foot, sores, burns, and ulcers

Wild Quinine

• Parthenium integrifolium
• Found in prairie's, rock outcrops, & roadsides
• Active chemical ingredient is quinine
• Quinine: a white, bitter, slightly water-soluble alkaloid, C 2 0 H 2 4 N 2 O 2,having needlelike crystals, obtained from cinchona bark: used in medicine chiefly in the treatment of resistant forms of malaria.

(Source)

• Use poultice with fresh leaves on burns. Flowering tops used for "intermittent fevers"(like malaria). Roots used as diuretic for kidney and bladder ailments, gonorrhea.(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)