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Marcus, Joseph A.

Oenothera macrocarpa ssp. macrocarpa

Oenothera macrocarpa Nutt. ssp. macrocarpa

Bigfruit Evening-primrose, Fluttermill, Missouri Evening Primrose

Onagraceae (Evening Primrose Family)

Synonym(s): Megapterium missouriense, Oenothera missouriensis

USDA Symbol: OEMAM

USDA Native Status: L48 (N)

Missouri Evening Primrose is a low, occasionally tufted, smooth to hairy perennial herb 4" to 24" tall. Stems are spreading to ascending from a thick woody root. Leaves are alternate, simple, narrowly lance-shaped to egg-shaped. Flowers are showy, solitary and yellow.

From the Image Gallery

61 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Fruit Type: Capsule
Size Notes: Up to about 2 feet tall.

Bloom Information

Bloom Color: Yellow
Bloom Time: Apr , May , Jun , Jul , Aug , Sep

Distribution

USA: AR , IL , KS , MO , NE , OK , TN , TX

Growing Conditions

Water Use: Low
Light Requirement: Sun , Part Shade
Soil Moisture: Dry
Drought Tolerance: High

Benefit

Conspicuous Flowers: yes
Interesting Foliage: yes
Attracts: Butterflies , Hummingbirds
Nectar Source: yes

Value to Beneficial Insects

Special Value to Native Bees

This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.

Propagation

Propagation Material: Seeds
Description: Plant seed outside in the fall or early winter.
Seed Treatment: Germination is improved with 4 to 6 weeks of cold moist stratification.
Commercially Avail: yes
Maintenance: Requires little maintenance.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Lady Bird Johnson Wildflower Center - Austin, TX
NPSOT - Austin Chapter - Austin, TX

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Oenothera macrocarpa ssp. macrocarpa in USDA Plants
FNA: Find Oenothera macrocarpa ssp. macrocarpa in the Flora of North America (if available)
Google: Search Google for Oenothera macrocarpa ssp. macrocarpa

Metadata

Record Modified: 2023-02-21
Research By: TWC Staff

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