Gap analysis of knowledge about the microstructure of Impatiens Riv. ex L. (Balsaminaceae) seeds using SEM techniques

We conducted a literature review on the taxonomic importance of seed micromorphology in the genus Impatiens Riv. ex L. (Balsaminaceae), focusing on studies using scanning electron microscopy (SEM). Of 47 sources, SEM descriptions were available for more than 180 species, revealing significant gaps in micromorphological data within the genus. Our work provides a consolidated resource on Impatiens taxonomy and highlights the need for further SEM studies to improve species identification and phylogenetic analysis.