In this study, 15 samples were collected on a bi-monthly basis, during the period between March and May 1994, and 3 additional samples were collected, one in each of the months of July, October and November 1994. All the samples were collected in Lake Amapá (lat. 10°2'36"S, long. 67°50'24"W), which is located in Rio Branco, Acre State, Brazil. Ten táxons, of Chlorophyta were registered: Botryococcaceae (2), Treubariaceae (1), Volvocaceae (2), Closteriaceae (3) e Desmidiaceae (2). All taxa identified are first citations for Acre State.
plankton; taxonomy of Chlorophyta; Acre State
