Spore atlas of isosporate ferns of Punta Lara Nature Reserve, Argentina

DANIEL ALEJANDRO GORRER; PEDRO CAYETANO BERRUETA; JUAN PABLO RAMOS GIACOSA; MARÍA LUJÁN LUNA; GABRIELA ELENA GIUDICE

BOLETíN DE LA SOCIEDAD ARGENTINA DE BOTáNICA

SOCIEDAD ARGENTINA DE BOTÁNICA

Lugar: Córdoba; Año: 2021

0373-580X

Background and aims: The morphological characteristics of the spores provideinformation for the identification of fern taxa. To deepen the analyses of themorphological characteristics of the spores of the isosporated ferns inhabiting thePunta Lara Nature Reserve using light microscopy.M&M: The spores of the isosporate ferns that grow in the Punta Lara Nature Reserve(Buenos Aires Province, Argentina) were studied under a light microscope. Thestudy was carried out with fresh materials collected during three years (2016-2018)at different sites of the Reserve. Twenty fern taxa, 16 native and 4 exotic, wereanalysed. The registered characteristics were: colour, shape, major and minorequatorial diameters, polar diameter, length and characteristics of the laesura andwall ornamentation.Results: The colour of the spores may be yellow, light brown, dark brown and only inEquisetum they are green (chlorophyllous). Most spores are monolete (13 species),other trilete (6 species) and only one species has alete spores. The spore wallsmay be smooth, wrinkled, folded, verrucated, tuberculated, reticulated and winged.Conclusions: The morphology of the spores allows the identification of the fernsof the Reserve at a generic and specific level and provides information