KNP Rare Plants Database


 
KY Office of Kentucky Nature Preserves




Small Sundrops
Oenothera perennis
Family: Onagraceae

Protection Status:
State Status:  E
USFWS Status: 

Global Rank: G5
State Rank: S1S2

   

Photo by Thomas G. Barnes
Habitat:
Dry to moist open ground, open woods, fields, and meadows.

Species Description:
Perennial herb.

Phenology:
Flowering Period: Early June to late August.

Additional Information at NatureServe

Diagnostic Characteristics:
This small Oenothera is distinct in having small flowers (petals 3-10mm and anthers 0.5-2.5mm) and the stigmas at about the same height as the anthers. One flower per plant opens at one time in the evening. The fruit is glandular pubescent and angled. Leaves are entire and generally elliptic.

Management:
Disturbance such as ATV trails, timber removal or any activity that results in increased erosion and weed invasion will be detrimental. Exotic pest plants are a threat to this species and should be removed. Avoid creating access to the site through trail or road construction.

Global Range:


Known Kentucky Occurrences:
Species occurrence map

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Data Last Updated: November 2018
Office of Kentucky Nature Preserves
300 Sower Blvd
Frankfort,KY 40601
Phone: (502) 573-2886
Email:
naturepreserves@ky.gov
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