El género Hymenasplenium (Aspleniaceae) en Argentina

Gabriela E. Giudice; María L. Luna; M. Alejandra Ganem

doi:10.14522/darwiniana.2013.11.497

Authors

Gabriela E. Giudice Cátedra de Morfología Vegetal, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata - CIC, provincia de Buenos Aires, Paseo del Bosque s/nº, 1900 La Plata, Argentina.
María L. Luna Cátedra de Morfología Vegetal, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata - CIC, provincia de Buenos Aires, Paseo del Bosque s/nº, 1900 La Plata, Argentina.
M. Alejandra Ganem Cátedra de Botánica General, Facultad de Ciencias Agrarias, Universidad Nacional de Jujuy, Alberdi 47, 4600 San Salvador de Jujuy, Argentina.

DOI:

https://doi.org/10.14522/darwiniana.2013.11.497

Keywords:

Argentina, Aspleniaceae, Hymenasplenium, morphology, spores

Abstract

A review of the Hymenasplenium species from Argentina is presented and their morphology and palynology are analyzed. Two species are recognized: H. laetum growing in Misiones, Salta and Tucumán, of terrestrial habit, and H. triquetrum which grows as saxicolous in Misiones. For both species, iconographies, descriptions, and distribution maps, are given. The diagnostic value of characteristics of the root inner cortex to differentiate both genera of Aspleniaceae, and the presence of two types of spores ornamentation in Hymenasplenium, are corroborated. Illustrations of the morphological features of the roots, petioles, and spores are presented.