Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Malvids: Myrtales
WEAKLEY'S FLORA (11/30/12):
Ludwigia grandiflora ssp. hexapetala
FAMILY
Onagraceae
(?) SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Ludwigia grandiflora ssp. hexapetala
FAMILY
Onagraceae
INCLUDED WITHIN
VASCULAR FLORA OF THE CAROLINAS (1968) 137-01-004?:
Ludwigia uruguayensis
FAMILY
Onagraceae
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
COMMON NAME:
Common Water-primrose
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)
John B. Nelson jbn_5737859077_d763e5cc88
May Berkeley County
Lake Moultrie
Lower stems decumbent, creeping, or floating in mats, per Weakley's Flora.
)
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.
)
Richard and Teresa Ware rtw_l_grandiflorahex
July
Flowering stems more or less erect, pubescent with long soft hairs, per Weakley's Flora.
)
JK Marlow jkm160914_093
September
SE-EPPC Aquatic Plant ID Workshop
Stems sparsely to densely villous (rarely glabrous), per Weakley's Flora.
)
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.