Prada, Carmen, and Cristina H. Rolleri. “Foliar Diagnostic Characters in Iberian Species of Isoetes L. (Isoetaceae, Pteridophyta)”. Anales del Jardín Botánico de Madrid 60, no. 2 (December 30, 2003): 371–386. Accessed May 2, 2024. https://rjb.revistas.csic.es/index.php/rjb/article/view/97.