Pteridophytes are a group of plants that reproduce through spores and have vascular tissue. Commonly referred to as ferns, this group includes other plants like horsetails and club-mosses. If you're looking for synonyms for pteridophytes, there are a few options. One is "ferns", which is the most common and well-known word for this group of plants. Another is "vascular cryptogams", which describes the vascular tissue and spore reproduction. Finally, you can use "pteridophytic plants" or simply "pteridophytes", which are the scientific names for the group. Whatever you choose, these words all refer to the same collection of interesting, diverse plants.