A phytobenthos and macrophytes checklist was carried at the Manzanaresriver basin, Sucre state, Venezuela, from November 2003 to July 2005. Collectwas accomplished manually and material was examined with a stereoscopicloupe and a microscope. With artificial key aid, 21 phytobenthos andmacrophytes species: 4 Cyanophyta, 9 Chlorophyta, 1 Heterokontophyta, 2Rhodophyta, 3 Bryophyta and 2 Magnoliophyta were identified. The basin lowersof the Manzanares presented the higher species number, being th...