title: The correct name for a section of Ludwigia L. (Onagraceae).
abstract: In 1953, Hara provided new combinations for many sectional and species names when he combined Jussiaea L. with Ludwigia L., and at the time, Ludwigiasect.Oligospermum (Micheli) H.Hara was the correct name for one well-defined section. However, subsequent changes to/clarifications of the botanical code have necessitated a change for that name in that now an autonym is treated as having priority over the name or names of the same date and rank that established it. Since Hara's combination was based on Jussiaeasect.Oligospermum Micheli, the correct name for this section is Ludwigiasect.Jussiaea (L.) Hoch, W.L.Wagner, & P.H.Raven.
authors.affiliation: Missouri Botanical Garden, P.O. Box 299, St. Louis, MO 63166-0299, USA.
authors.forename: Peter C
authors.initials: PC
authors.lastname: Hoch
authors.affiliation: Department of Botany, MRC-166, National Museum of Natural History, Smithsonian Institution, P.O. Box 37012, Washington, DC 20013-7012, USA.
authors.forename: Warren L
authors.initials: WL
authors.lastname: Wagner
authors.affiliation: Missouri Botanical Garden, P.O. Box 299, St. Louis, MO 63166-0299, USA.
authors.forename: Peter H
authors.initials: PH
authors.lastname: Raven
keywords: Jussiaea; Ludwigia; nomenclature; sect. Oligospermum