CHROMOSOME NUMBERS IN 28 GRASS GENERA FROM SOUTH AMERICA

Abstract
The somatic (2n) chromosome numbers of more than 70 species of 28 genera of grasses from Bolivia, Argentina, Chile, and Uruguay are recorded. The chromosome numbers of about half of these species have not been reported in previous cytotaxonomic literature. The 28 genera are Agrostis, Aira, Andropogon, Apera, Arrhenatherum, Briza, Bromus, Cenchrus, Chloris, Cynodon, Danthonia, Eragrostis, Festuca, Gastridium, Koeleria, Melica, Nassella, Paspalum, Phalaris, Poa, Polypogon, Rottboellia, Schismus, Setaria, Sporobolus, Stipa, Trichachne, and Trichloris.