Fig. 4. a–c in Diversity and distribution of Ludwigia (Onagraceae) in Paraíba State, Northeastern Brazil

Fig. 4. a–c. Ludwigia erecta (L.) H.Hara. a. Habit showing pneumatophore roots (arrow). b. Flower. c. Fruits. – d–e. L. helminthorrhiza (Mart.) H.Hara. d. Habit showing spongy pneumatophore roots (arrow). e. Flower. – f–h. L. hyssopifolia (G.Don) Exell. f. Habit. g. Branch with flowers and fruits. h. Flower. Photos: a, c–f = A.M. Rocha, b = F.C.P. Costa, g–h =H.C. Araújo.