Checklist of the Pteridophytes of Aguascalientes, Mexico

Abstract

Ferns and fern allies from Agu ascalientes, Mexico were s tudied. Fifty-five localities distributed in all municipios of the state were surveyed. Seventy-seven taxa were found: seventy species of ferns, five species of Selaginell, one species of Equisetum, and one species of Isoëtes. Forty taxa are new records for Aguascalientes. Among the ferns, Cheilanthes and Polypodium are the most diverse and abundant genera, usually occurring in xerophytic associations or dry forests. Selaginella is also common in Aguascalientes, and inhabits rocky cliffs in dry environments. Equisetum and lsoëtes are restricted to marshy places.