Leptopteris is a genus of ferns that includes approximately 40 species across the world. While there are not many direct synonyms for this genus, there are other fern genera that are closely related and share similar traits. Examples include Cyathea, Alsophila, and Gymnosphaera. These genera have similar fronds and growth habits. Additionally, some species within the genus Leptopteris have common names that include "umbrella fern" or "shield fern," which could be used synonymously to refer to these particular species. Ultimately, when describing or discussing Leptopteris, it may be helpful to also mention related fern genera to provide a more comprehensive understanding of the plant family.