References
Zardini, E.M., H. Gu, & P.H. Raven. 1991. On the separation of two species within the Ludwigia uruguayensis complex (Onagraceae). Systematic Bot. 16: 242-244. Google Scholar
Zardini, E.M., H. Gu, & P.H. Raven. 1991. On the separation of two species within the Ludwigia uruguayensis complex (Onagraceae). Systematic Bot. 16: 242-244. Google Scholar