Ludwigia

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids II
Ordo: Myrtales

Familia: Onagraceae
Subfamilia: Ludwigioideae
Genus: Ludwigia
Sectiones: L. sect. Africana – L. sect. Amazonia – L. sect. Arborescentes – L. sect. Brenania – L. sect. Caryophylloidea – L. sect. Cinerascentes – L. sect. Cryptosperma – L. sect. Fissendocarpa – L. sect. Heterophylla – L. sect. Humboldtia – L. sect. Isnardia – L. sect. Ludwigia – L. sect. Macrocarpon – L. sect. Microcarpium – L. sect. Miquelia – L. sect. Myrtocarpus – L. sect. Nematopyxis – L. sect. Nipponia – L. sect. Oligospermum – L. sect. Prieurea – L. sect. Pterocaulon – L. sect. Seminuda – L. sect. Tectiflora

Species: L. abyssinica – L. adscendens – L. affinis – L. africana – L. alata – L. albiflora – L. alternifolia – L. anastomosans – L. arcuata – L. bonariensis – L. brachyphylla – L. brenanii – L. brevipes – L. bullata – L. burchellii – L. caparosa – L. curtissii – L. decurrens – L. densiflora – L. dodecandra – L. elegans – L. epilobioides – L. erecta – L. filiformis – L. foliobracteolata – L. glandulosa – L. grandiflora – L. hassleriana – L. helminthorrhiza – L. hexapetala – L. hirtella – L. hookeri – L. hyssopifolia – L. inclinata – L. irwinii – L. jussiaeoides – L. lagunae – L. lanceolata – L. laroutteana – L. latifolia – L. leptocarpa – L. linearis – L. linifolia – L. longifolia – L. major – L. maritima – L. martii – L. mexiae – L. microcarpa – L. multinervia – L. myrtifolia – L. neograndiflora – L. nervosa – L. octovalvis – L. ovalis – L. palustris – L. peduncularis – L. peploides – L. perennis – L. peruviana – L. pilosa – L. polycarpa – L. prostrata – L. pseudonarcissus – L. quadrangularis – L. ravenii – L. repens – L. rigida – L. sedioides – L. senegalensis – L. sericea – L. simpsonii – L. spathulata – L. speciosa – L. sphaerocarpa – L. stenorraphe – L. stolonifera – L. stricta – L. suffruticosa – L. tomentosa – L. torulosa – L. virgata

Nothospecies: L. × kentiana – L. × lacustris – L. × taiwanensis
Name

Ludwigia L., Sp. Pl. 1: 118. (1753)

Ludwigia alternifolia L., Sp. Pl. 1: 118. (1753) vide Britton & A.Brown, (1913)

Synonyms

Heterotypic
Isnardia L. Sp. Pl. 120. (1753)
Jussiaea L., Sp. Pl. 1: 388. (1753)
Dantia Boehm., Def. Gen. (C.G.Ludwig) ed. 3. 388. (1760)
Cubospermum Lour., Fl. Cochinch. 1: 275. (1790)
Prieurea DC., Prodr. (Candolle) 3: 58. (1828)
Adenola Raf., Aut. Bot. 36. (1840)
Danthia Steud., Nomencl. Bot. (Steudel), ed. 2. 1: 482. (1840)
Diplandra Raf., Aut. Bot. 35. (1840) nom. illeg. hom. non Hook. & Arn. (1837), nom. cons.
Corynostigma C.Presl, Epimel. Bot. 218. (1851)
Nemotopyxis Miq., Pl. Ind. Bat. 1(1): 600. (1855)
Quadricosta Dulac, Fl. Hautes-Pyrénées 329. (1867)
Oocarpon Micheli, Flora 57: 303. (1874)
Ludwigiantha (Torr. & A.Gray) Small, Bull. Torrey Bot. Club 24: 178. (1897)
Fissendocarpa (Haines) Bennet, J. Asiat. Soc. Bengal, ser. 2., 15: 314. (1920)

References

Linnaeus, C. 1753. Species Plantarum 1: 118. , as Luvigia.
Britton, N.L. & Brown, A. 1913. Ill. Fl. N.U.S. ed. 2. 2: 586.
Hassler, M. 2017. Ludwigia. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2017. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2017 Oct. 31. Reference page.
International Plant Names Index. 2017. Ludwigia. Published online. Accessed: Oct. 31 2017.
Wagner, W.L. & Hoch, P.C.. 2005-. Ludwigia in: Onagraceae, The Evening Primrose Family website. Accessed: 2011 Sept 18.

Vernacular names
English: Primrose-willow, Water-purslane, Water-primrose
suomi: Rusolehdet

Ludwigia (primrose-willow, water-purslane, or water-primrose) is a genus of about 82 species of aquatic plants native to Central and South America[1] with a cosmopolitan but mainly tropical distribution.

At current, there is much debate among botanists and plant taxonomists as to the classification of many Ludwigia species. Botanists from the US Department of Agriculture are currently doing genetic analyses on plants from the Western US and South America to better classify members of this genus.

The genus was named by Carl Linnaeus after Christian Gottlieb Ludwig (1709-1773), a German botanist, who was apparently not amused by this honour.[2]

Fossil record

A large number of fossil seeds of †Ludwigia collinsoniae and †Ludwigia corneri have been described from middle Miocene strata of the Fasterholt area near Silkeborg in Central Jutland, Denmark.[3]
Selected species

Listed from the NCBI database:[4]

Ludwigia adscendens
Ludwigia alata
Ludwigia alternifolia
Ludwigia anastomosans
Ludwigia arcuata
Ludwigia bonariensis
Ludwigia brevipes
Ludwigia curtissii
Ludwigia decurrens
Ludwigia erecta
Ludwigia glandulosa
Ludwigia grandiflora
Ludwigia helminthorrhiza
Ludwigia hirtella
Ludwigia hexapetala
Ludwigia hyssopifolia
Ludwigia inclinata
Ludwigia lanceolata
Ludwigia leptocarpa
Ludwigia linearis

Ludwigia linifolia
Ludwigia longifolia
Ludwigia maritima
Ludwigia microcarpa
Ludwigia natans
Ludwigia octovalvis
Ludwigia palustris
Ludwigia peploides
Ludwigia peruviana
Ludwigia pilosa
Ludwigia polycarpa
Ludwigia ravenii
Ludwigia repens
Ludwigia sedioides
Ludwigia simpsonii
Ludwigia spathulata
Ludwigia sphaerocarpa
Ludwigia suffruticosa
Ludwigia virgata

References

"Ludwigia (Ludwigia peruviana)". NSW Department of Primary Industries. Retrieved 2020-02-05. "Native to South America, from Mexico through to Chile."
Vol. II. - Caclyciflorae. 2. Rivington. 1832. p. 696.
Angiosperm Fruits and Seeds from the Middle Miocene of Jutland (Denmark) by Else Marie Friis, The Royal Danish Academy of Sciences and Letters 24:3, 1985

NCBI taxonomy- Reviewed 2017-11-25

Wagner, W. L., Hoch, P. C., & Raven, P. H. (2007). Revised classification of the Onagraceae. Systematic Botany Monographs, 83.