The wetland plant composition is slightly different in Catalina.  Pistia seems to dominate many open water areas, rather than Eichhornia and there are large patches of Lemna (pictured below) in some parts.  Of course, the dominate emergent is Typha, but there is some Thalia.   The Typha seems much more dominate this year than last, but I’m not sure if the wetland is managed similar to the wetland in the Palo Verde sector.  Margins of the wetland have lots of Parkinsonia.