Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Malvids: Myrtales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Ludwigia hexapetala
FAMILY
Onagraceae
Go to FSUS key
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
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Ludwigia grandiflora ssp. hexapetala
SYNONYMOUS WITH Flora of North America
Ludwigia hexapetala
SYNONYMOUS WITH New combinations in the Florida flora III (Ward, 2012)
Ludwigia grandiflora var. hexapetala
INCLUDED WITHIN Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2011)
Ludwigia grandiflora
INCLUDED WITHIN Floristic Synthesis of North America (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
INCLUDED WITHIN Gray's Manual of Botany (Fernald, 1950)
Jussiaea uruguayensis
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 OF THE SOUTHEASTERN US (4/24/22):
Ludwigia hexapetala
FAMILY
Onagraceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Ludwigia grandiflora ssp. hexapetala
FAMILY
Onagraceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Ludwigia grandiflora ssp. hexapetala
SYNONYMOUS WITH
Flora of North America
Ludwigia hexapetala
SYNONYMOUS WITH
New combinations in the Florida flora III (Ward, 2012)
Ludwigia grandiflora var. hexapetala
INCLUDED WITHIN
Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2011)
Ludwigia grandiflora
INCLUDED WITHIN
Floristic Synthesis of North America (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
INCLUDED WITHIN
Gray's Manual of Botany (Fernald, 1950)
Jussiaea uruguayensis
3429
Emergent aquatic (rooted); Forb
Perennial
Habitat: Ponds, lakes, sluggish waters of ditches or streams, per Weakley's Flora
Non-native
Uncommon in Coastal Plain & SC Piedmont (rare elsewhere in GA-NC-SC)
Click here to see a map, notes, and images from Weakley's Flora of the Southeastern US.
Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)
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 (Duncan & Duncan, 1999) p056?
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p265
- Wildflowers of Tennessee (Carman, 2005) p151?
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p187?