IBONE   05434
INSTITUTO DE BOTANICA DEL NORDESTE
Unidad Ejecutora - UE
artículos
Título:
Fissidens submarginatus Bruch. new to Argentina
Autor/es:
CABRAL, R. A.; JIMENEZ, M. S.; SUÁREZ, G. M.
Revista:
JOURNAL OF BRYOLOGY
Editorial:
MANEY PUBLISHING
Referencias:
Lugar: London; Año: 2020 vol. 63 p. 1 - 16
ISSN:
0373-6687
Resumen:
The Paraje Tres Cerros Private Nature Reserve (Corrientes, Argentina) was created to protect a unique landscape of Corrientes province with rocky outcrops of sandstones and basalts that protrude from the vast plain that surrounds them. The southern slopes are more pronounced and retain moisture from this direction creating characteristic plant formations on the opposite side of the hills (e.g. gramineous shrub-steppe on the northern slope and hygrophilic forest on the southern slope) (Carnevali, 1994 ). This phenomenon generates a great diversity of microhabitats (Cajade et al., 2013) suitable for the bryophyte colonization. Samples recently collected were processed according to the classic methodology for this group (Gradstein et al., 2001) and deposited at CTES herbarium. From a detailed study, one sample matched in a hole with Fissidens submarginatus Bruch. This species is characterized by the presence of a vaginant lamina, not clasping the stem; limbidium present in all leaves, extending the entire length or nearly so of the vaginant laminae; laminal cells unipapillose, and costa percurrent or sub-percurrent ending one or two cells below the apex. F. submarginatus inhabit soil, rock or termite mounds, but also at the base of decomposing trunks and branches (Bordin, 2011). In Argentina the species was found growing mixed with Lophocolea bidentata (L.) Dumort and Lejeunea lepida Lindenb & Gottsche. The complete distribution include Africa (O?shea, 2006) and America, from United States to southern Paraguay and Brazil and is here recorded for the first time for Argentina, representing its southernmost distribution point.