Native & Naturalized Plants of the Carolinas & Georgia


3429

Emergent aquatic (rooted); Forb
Perennial

Non-native

Documented growing wild in GA NC SC

Uncommon in Coastal Plain of NC-SC, rare elsewhere in GA-NC-SC

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

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INVASIVE

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

 

 

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 (2/8/20):
Ludwigia hexapetala   FAMILY Onagraceae

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

INCLUDED WITHIN Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2011)
Ludwigia grandiflora

INCLUDED WITHIN Synthesis of the North American Flora (Kartesz, 1999)
Ludwigia uruguayensis

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

INCLUDED WITHIN VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 137-01-004?:
Ludwigia uruguayensis   FAMILY Onagraceae

SYNONYMOUS WITH -
Ludwigia grandiflora var. hexapetala

 

COMMON NAME:
Common Water-primrose


Click or hover over the thumbnails to see larger pictures.

image of Ludwigia hexapetala, Common Water-primrose

John B. Nelson    jbn_5737859077_d763e5cc88

May    Berkeley County    

Lake Moultrie

Lower stems decumbent, creeping, or floating in mats, per Weakley's Flora (2012).

image of Ludwigia hexapetala, Common Water-primrose

John B. Nelson    jbn_5738407460_ea785b8e89

May    Berkeley County    

Lake Moultrie

Ssp. hexapetala is understood to be larger flowered than ssp. grandiflora, per Observations on the Ludwigia uruguayensis Complex (Onagraceae) in the US (Nesom & Kartesz, 2000).


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

image of Ludwigia hexapetala, Common Water-primrose

JK Marlow    jkm080611_026b

June    Greenville County    SC

Lake Conestee Nature Park

Sepals (8-)12-19mm long, per Weakley's Flora (2012).

image of Ludwigia hexapetala, Common Water-primrose

Richard and Teresa Ware    rtw_l_grandiflorahex

July        

Flowering stems more or less erect, pubescent with long soft hairs, per Weakley's Flora (2012).

image of Ludwigia hexapetala, Common Water-primrose

JK Marlow    jkm160914_093

September        

SE-EPPC Aquatic Plant ID Workshop

Stems sparsely to densely villous (rarely glabrous), per Weakley's Flora (2015).

image of Ludwigia hexapetala, Common Water-primrose

JK Marlow    jkm160914_169

September        

SE-EPPC Aquatic Plant ID Workshop

Primary leaves usually narrowly elliptic to oblanceolate & widest above middle, per Weakley's Flora.