%0 Journal Article
%T <i>Serpocaulon orosiense</i>, a New Hybrid of <i>Serpocaulon</i> (Polypodiaceae) from Costa Rica
%A Alexander Francisco Rojas-Alvarado
%A Luc¨ªa Barrantes-Calvo
%J Open Access Library Journal
%V 8
%N 11
%P 1-8
%@ 2333-9721
%D 2021
%I Open Access Library
%R 10.4236/oalib.1108047
%X Four hybrids between <i>Serpocaulon</i> species have been described, one of them <i>S.</i> ¡Á <i>sessilipinnum</i> was the only known hybrid between two different clades proposed by Smith <i>et al.</i> In this work, a new hybrid <i>S.</i> ¡Á <i>orosiense</i> is described, being the second known hybrid between clades: 1) <i>Serpocaulon loriceum</i> and 2) <i>S. fraxinifolium</i>. The detailed study of the intermediate morphology of the characters of the new taxon and their progenitors were made by light microscopy with a Motic Instruments brand binocular stereoscope, Model SMZ-171-BLED and photographs of the spores with a Motic brand binocular microscope, model BA210E. The new nothotaxon has intermediate characters between <i>S. fraxinifolium</i> and <i>S. loriceum</i> as size of the frond; shape, division and apex of the leaf blade; shape, broad, apex and number of pinnae; and number of series of areoles and sori. As result and conclusion, a new nothotaxon with intermediate morphology between two progenitors is discovered between different clades within the genus <i>Serpocaulon</i>.
%K Ferns
%K Nothotaxon
%K Polypodiopsida
%K Serpocaulon fraxinifolium
%K S. loriceum
%U http://www.oalib.com/paper/6764204