Oenothera pilosella explained

Oenothera pilosella is a species of flowering plant in the evening primrose family known by the common name meadow evening primrose. It is native to the United States and eastern Canada.^{[1] [2]}

This species is grown as an ornamental garden plant. It produces flowers with yellow petals in late spring and early summer.^[3]

There are two subspecies. One, subsp. sessilis, is a rare herb native to the Mississippi River Valley in Louisiana and Arkansas.^[4]

Notes and References

1. http://plants.usda.gov/java/profile?symbol=oepi2 Oenothera pilosella.
2. http://www.natureserve.org/explorer/servlet/NatureServe?searchName=Oenothera+pilosella Oenothera pilosella.
3. http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/plant-finder/plant-details/kc/g570/oenothera-pilosella.aspx Oenothera pilosella.
4. http://www.centerforplantconservation.org/Collection/CPC_ViewProfile.asp?CPCNum=3001 O. pilosella ssp. sessilis.