Diatoms from the hypersaline la amarga lake (La Pampa, Argentina)

As part of a more comprehensive study of the diatom flora from La Pampa province (Argentina), several samples collected in April 1991 and October 1992, from the hypersaline La Amarga lake (35°15'S, 63°05'W) were analized. Fifty three taxa were identified, from which five are new records for Argentina, two are new records for argentine inland waters and fifteen of the remaining diatoms had not been mentioned previously for the province. Ecological affinities of some taxa are discussed. Some comments about LM and SEM morphological features, taxonomy and distribution of several taxa are included.