Chickweed

Stellaria media

Habitat: Tall Grass Prairie, Eastern Deciduous Forest

Seasons: Late summer through fall

Active Chemical Ingredient

Linoleic-acid

https://en.wikipedia.org/wiki/Linoleic-acid

Use of specimen: A leaf ointment is used to help soothe irritated skin and burns

Source: http://www.anniesremedy.com/herb_detail149.php