Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Malvids: Myrtales
WEAKLEY'S FLORA (2/8/20):
Ludwigia hexapetala
FAMILY
Onagraceae
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Read more about Common Water-primrose at Vascular Plants of North Carolina.
(?) 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
To see larger pictures, click or hover over the thumbnails.
)
John B. Nelson jbn_5737859077_d763e5cc88
May Berkeley County
Lake Moultrie
Lower stems decumbent, creeping, or floating in mats, per Weakley's Flora (2012).
)
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).
COMPARE
aquatic plants
)
JK Marlow jkm080611_026b
June Greenville County SC
Lake Conestee Nature Park
Sepals (8-)12-19mm long, per Weakley's Flora (2012).
)
Richard and Teresa Ware rtw_l_grandiflorahex
July
Flowering stems more or less erect, pubescent with long soft hairs, per Weakley's Flora (2012).
)
JK Marlow jkm160914_093
September
SE-EPPC Aquatic Plant ID Workshop
Stems sparsely to densely villous (rarely glabrous), per Weakley's Flora (2015).
)
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.
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
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
Click here to see a more detailed map from University of North Carolina at Chapel Hill Herbarium,
or click here to see a map from SERNEC, a consortium of southeastern herbaria.
This plant is causing problems in natural areas outside its native range, according to authorities such as:
- SC Department of Natural Resources Aquatic Nuisance Species List, 2003
- SC List of Regulated Pest Plant Species, 2017
- Virginia Department of Conservation and Recreation, 2014
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!
- Wildflowers of the Eastern United States p056?
- Wildflowers of Tennessee p151?
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians p187?