Figs. 2 A-D in Taxonomic survey of the Araceae Juss. in the coastal region of Piauí state, northeast Brazil, including the Rio Parnaíba Delta

Figs. 2 A-D. Araceae from the coastal region of Piauí. A. Lemna aequinoctialis Welw., population with fronds seen from above (detail); B. Lemna valdiviana Phil., population with fronds seen from below (detail); C. Montrichardia linifera (Arruda) Schott, population with flowering inflorescence (detail); D. Pistia stratiotes L., population with inflorescence in flower, showing spathe surrounding stigma below and whorl of male flowers above (detail). Bars: Fig. A = 0,5 mm; Fig. B = 0,15 mm; Fig. C = 4,75 cm; Fig. D = 0,5 mm.