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CCDB → Angiosperms → Crassulaceae → Sedum → Sedum oreganum Nutt.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Sedum oreganum Nutt. | Sedum oreganum Nutt. | 12 | IPCN online | Baker, M. A. & B. D. Parfitt. 1982. In IOPB chromosome number reports LXXVII. Taxon 31: 764–765. | |||
| Sedum oreganum Nutt. | Sedum oreganum Nutt. | 12 | IPCN online | Chambers, K. L., D. Green, S. Potampa & L. McMahan. 1998. IOPB chromosome data 13. Newslett. Int. Organ. Pl. Biosyst. (Oslo) 29: 18–22. | |||
| Sedum oreganum subsp. oreganum | Sedum oreganum Nutt. | 12 | IPCN online | Denton, M. F. 1979. Cytological and reproductive differentation in Sedum sect. Gormania (Crassulaceae). Brittonia 31: 197–211. | |||
| ! | Sedum oreganum subsp. oreganum | Sedum oreganum Nutt. | 12 | IPCN online | Uhl, C. H. 1977. Cytogeography of Sedum lanceolatum and its relatives. Rhodora 79: 95–114. | ||
| ! | Sedum oreganum Nutt. | Sedum oreganum Nutt. | 24 | eFlora | |||
| ! | Sedum oreganum Nutt. | Sedum oreganum Nutt. | 24 | Darlington, 1955 | Clausen & U. 1944 |