Menezes, C. G., GASPARINO, E. C., BALEEIRO, P. C., & DE MIRANDA, V. F. O. (2014). Seed morphology of bladderworts: a survey on <em>Utricularia</em> sect. <em>Foliosa </em>and sect. <em>Psyllosperma</em> (Lentibulariaceae) with taxonomic implications. Phytotaxa, 167(2), 173–182. https://doi.org/10.11646/phytotaxa.167.2.3