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CCDB → Bryophytes → Polytrichaceae → Atrichum → Atrichum undulatum var. altecristatum Renauld & Cardot
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Atrichum undulatum var. altecristatum Renauld & Cardot | Atrichum altecristatum (Renauld & Cardot) Smyth & Smyth & L. C. Riddle | 7 | Cave1962 | Bird 1962 |