Entre Ríos' characteristic vegetation belongs to the fitogeographical area called "Parque Mesopotámico", inside which, we can distinguish the following types of vegetation. On the eastern and western riverbanks there are forests that are a continuation of the missionary ones, along the water flows, when the river or streams are narrow ones, the trees from both riverbanks are joined at the top. Inside the forest, its very humid. The arboreal species are: the tacuaruzú, pindó, Creole or red sallow, "higuerón or agarrapalo", "quebrachillo", vivarí, ombú,, red timbó, ibirá pitá, "lapachillo", ceibo, lecherón or curpí, white Sarandi, molle, coronillo, myrtle, guayabo, lapacho de Misiones and aliso. The hydrophilic forests grow in the humid regions, they are distinguished from the others because there are less species and there are no lianas. There are pure forests of a single species forming "ceibales, sausales", etc. The ceibo is a typical area's tree because it adapts to the marshy soils where it forms extensive open forests

The aquatic vegetation appears along all the tidelands, lagoons, rivers, etc. Among them the irupé is the standing out one. It is a ninfacea which leaves reach up to 2 meters diameter. Its flower is white outside, and inside it may be white, red, or orange. It opens at sunrise and it closes at sunset. Its fruit has the size of a watermelon, it grows under water and from its seeds a flour similar to the corn one, can be extracted. Its flowers' juice is a very tasty one. There are also floating species, called "camalotes". The palm trees forests of the region belong to several species among which, the most well known are: the yatay, the caranday, the pindó, and the mbocayá. The Palm Trees Forests (Palmares) from Concordia and Colón are very famous. Concordia's yatayes are formed by high old trees, that are renewed with a lot of difficulty. "Colón's Palmar" was declared National Park. It is an open forest, on a surface of about 15 hectares placed between Uruguay's River coast and the National Route nº 14. The predominant species is the Syagrus Yayay, a palm of about 12 meters height that has leaves of more than 2 meters length and a trunk of about 40 centimeters diameter. Almost all of the trees overcome 100 years.