Funez, L.A., Farias, D.M., de Gasper, A.L. & Hassemer, G. (2021)

Ludwigia irregularis (Onagraceae) a rare new species from southern Brazil, and typification of the morphologically similar L. myrtifolia

. Phytotaxa 520 (3): 257–264. https://doi.org/10.11646/phytotaxa.520.3.4