Pteridological
Pteridological refers to the study of ferns and other non-flowering vascular plants known as pteridophytes. It involves the classification, identification, morphology, anatomy, evolution, ecology, and conservation of these plants. Pteridologists often conduct research on the diversity and distribution of ferns in different ecosystems around the world. They may also study the symbiotic relationships between ferns and other organisms, as well as the role of ferns in various ecological processes.