Classification
Class
Magnoliopsida Brongn.
Order
Myrtales Juss. ex Bercht. & J.Presl
Family
Onagraceae
 Subordinate Taxa
 Nomenclature
Scientific Name:
Ludwigia L., Sp. Pl. 118-119 (1753)
 Description

Slender-stemmed perennial herbs, less commonly erect shrubs. Underwater parts often swollen, spongy or bearing inflated pneumatophores. Lvs alternate or opposite, simple, mostly entire. Fls axillary, actinomorphic, solitary or clustered in spikes or heads. Floral tube not prolonged beyond ovary. Sepals 3–7, ± persistent at fruiting. Petals as many as sepals or 0, yellow or white. Stamens as many or twice as many as sepals; anthers usually versatile. Stigma entire or 4-lobed; ovary cells 4. Capsule variously shaped, dehiscent by terminal pores or longitudinal flaps. Seeds numerous, small, free or embedded in the woody endocarp.

[From: Webb et al. (1988) Flora of New Zealand. Volume 4.]

 Biostatus
Exotic
Number of species in New Zealand within Ludwigia L.
CategoryNumber
Exotic: Fully Naturalised2
Exotic: Casual2
Total4
 Bibliography
Linnaeus, C. 1753: Species Plantarum. Impensis Laurentii Salvii, Stockholm.
Mabberley, D.J. 2008: Mabberley's plant book, a portable dictionary of plants, their classification and uses. Edition 3. Cambridge University Press.