| Answer | Crossword Clue |
|---|---|
| pteridological | relating to pteridology, the study of ferns |
| pteridologies | PTERIDOLOGY, the study of ferns |
| soral | relating to the sori of ferns |
| filicinean | relating to Filicineae, the ferns |
| prothalloid | relating to the prothallus, the gametophyte or sexual generation in ferns and related plants |
| vascular | Relating to or denoting the plant tissues (xylem and phloem) that conduct water, sap, and nutrients in flowering plants, ferns, and their relatives |
