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CCDB → Angiosperms → Brassicaceae → Boechera → Arabis holboellii var. retrofracta (Graham) Rydb.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Arabis holboellii var. retrofracta (Graham) Rydb. | Boechera holboellii var. secunda (Howell) Dorn | 14 | IPCN online | Rollins, R. C. 1983. Interspecific hybridization and taxon uniformity in Arabis (Cruciferae). Amer. J. Bot. 70: 625–634. | |||
| ! | Arabis holboellii var. retrofracta (Graham) Rydb. | Boechera holboellii var. secunda (Howell) Dorn | 14 | IPCN66 | Rollins 1966 |