Oenothera perennis

Oenothera perennis is a species of flowering plant in the family Onagraceae and is native to the eastern United States and Canada.^[1][2] Its common names include little evening primrose,^[3] small sundrops,^[4] and small evening primrose. Its native habitats include shaly slopes, moist or dry fields, pastures and roadsides. Oenothera perennis is a perennial herb.^[5] It has yellow flowers that open during the day and close at night. Each flower has four petals that are notched at the tip with veins radiating from the base.^[6]

Oenothera perennis
Conservation status
Secure  (NatureServe)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Myrtales
Family:	Onagraceae
Genus:	Oenothera
Species:	O. perennis
Binomial name
Oenothera perennis L.