Fissidens crispus Mont., Ann. Sci. Nat., Bot

Jimenez, Soledad, 2024, Novedades para la flora de briófitos de la provincia de Chaco, norte de Argentina, Boletin de la Sociedad Argentina de Botanica 59 (4), pp. 465-480 : 471

7. Fissidens crispus Mont., Ann. Sci. Nat., Bot , sér. 2, 9: 57. 1838.

Diagnostic characters of F. crispus include tightly crispate leaves when dry, with limbate margins ending slightly below the apex, and laminal cells irregularly hexagonal, bulging, and smooth ( Pursell, 2007; Taha & Shabbara, 2019).

Distribution and habitat. Fissidens crispus is a pantropical species distributed from the Pacific Coast of the United States, Mexico, Central America, South America, northern Africa, and Europe ( Pursell, 2007). This species colonizes moist soil of trails, banks, rocks, rotting logs, and limestone boulders ( Pursell, 2007; Taha & Shabbara, 2019). It has been recorded in Corrientes, Misiones, Santa Fe and Tucumán ( Matteri, 2003; Alvarez & Villalba, 2021; Filippa & Villalba, 2021; Alvarez et al., 2023). In Chaco, this taxon was collected profusely fructified at P.N. El Impenetrable, alongside the road leading to the trails, in mixed mounds with Pottiaceae species under the bushes.

Specimens examined. ARGENTINA. Prov. Chaco: Dpto. General Güemes, Parque Nacional El Impenetrable (25° 01´28.2´´ S, 60° 55´45.5´´ W), terrícola formando montículos mixtos con Anaschisma lilliputanum al borde del camino, bajo arbustos, 11-VI-2023, Jimenez et al. 766b ( CTES) . Dpto. Presidencia de la Plaza, Parque Nacional Chaco (26° 47´40.24´´ S, 59° 37´6.76´´ W), terrícola, en la base de arbolito, escaso, húmedo y sombrío, 22-I-2012, Jimenez & Martín 307 ( CTES) . Dpto. Primero de Mayo, Reserva Educativa Colonia Benítez (27º 19´06.02´´ S, 58º 56´58.27´´ W), terrícola en sendero, abundante, húmedo y sombrío, 14-IV-2012, Jimenez et al. 411 ( CTES) .