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CCDB → Pteridophytes → Pteridaceae → Pentagramma → Pityrogramma viscosa (Nutt.) Maxon
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Pityrogramma viscosa (Nutt.) Maxon | Pentagramma triangularis subsp. viscosa (Nutt.) Yatsk. & Windham & E. Wollenw. | 60 | Love, 1977 | Alt & Grant 1960 |