Native & Naturalized Plants of the Carolinas & Georgia


1969

Emergent aquatic (rooted); Forb
Perennial

Non-native
Documented growing wild in GA NC SC

Uncommon (rare in Piedmont)

Look for it in ponds, lakes, sluggish waters of ditches or streams, per Weakley's Flora

map
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INVASIVE

This plant is causing problems in natural areas outside its native range, according to authorities such as:

NC Department of Transportation
SC List of Regulated Pest Plant Species, 2017
Tennessee Exotic Pest Plant Council, 2009

 

Aquatic

LEAVES:
Simple
Alternate

FLOWER:
Spring/Summer/Fall
Yellow
5-6 sepals
5-6 petals
Inferior ovary

FRUIT:
Spring/Summer/Fall
Capsule

 

TO LEARN MORE about this plant, look it up in a good book!



Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Malvids: Myrtales

WEAKLEY'S FLORA (11/30/12):
Ludwigia grandiflora ssp. grandiflora   FAMILY Onagraceae

(?) SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Ludwigia grandiflora ssp. grandiflora   FAMILY Onagraceae

LESS THAN VASCULAR FLORA OF THE CAROLINAS (1968) 137-01-004?:
Ludwigia uruguayensis   FAMILY Onagraceae

LESS THAN Synthesis of the North American Flora (Kartesz, 1999)
Ludwigia uruguayensis

SYNONYMOUS WITH Separation of 2 species within Ludwigia uruguayensis (Zardini, Gu, Raven, 1991)
Ludwigia grandiflora

 

COMMON NAME:
Showy Water-primrose


Click or hover over the thumbnails to see larger pictures.

image of Ludwigia grandiflora ssp. grandiflora

JK Marlow    jkm0506k_07

June    Union County    SC

Sumter National Forest: Tyger Ranger District

Stems grow into open water, intertwine, and form floating mats, per Wildflowers of the Carolina Lowcountry.

image of Ludwigia grandiflora ssp. grandiflora

JK Marlow    jkm0506k_11

June    Union County    SC

Sumter National Forest: Tyger Ranger District

In summer, on erect flowering stems, the leaves elongate, per Wildflowers of the Carolina Lowcountry.

image of Ludwigia grandiflora ssp. grandiflora

JK Marlow    jkm0506k_14

June    Union County    SC

Sumter National Forest: Tyger Ranger District

Primary leaves usually linear-lanceolate & widest below middle, per Weakley's Flora.


click here to see other plants that look similar to this COMPARE aquatic plants