Oenothera perennis

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.

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]

References

1. "Oenothera perennis". Germplasm Resources Information Network . Agricultural Research Service, United States Department of Agriculture . Retrieved 21 January 2018.
2. Oenothera perennis. NatureServe. 2012.
3. NRCS. "Oenothera perennis". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 30 January 2016.
4. BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 26 June 2015. Retrieved 17 October 2014.
5. "Lady Bird Johnson Wildflower Center - The University of Texas at Austin". www.wildflower.org. Retrieved 2021-11-28.
6. "Oenothera perennis (Small Sundrops): Minnesota Wildflowers". www.minnesotawildflowers.info. Retrieved 2021-11-28.