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CCDB → Angiosperms → Compositae → Xylorhiza → Xylorhiza tortifolia var. tortifolia
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Xylorhiza tortifolia var. tortifolia | Xylorhiza tortifolia (Torr. & A. Gray) Greene | 12, 24(30, 4) | Asteracea | Watson 1978 Madrono | |||
| Xylorhiza tortifolia var. tortifolia | Xylorhiza tortifolia (Torr. & A. Gray) Greene | 6,12 | 12 | IPCN online | Watson, T. J. 1978. Chromosome numbers in Xylorhiza Nuttall (Asteraceae Astereae). Madroño 25: 205–210. | ||
| Xylorhiza tortifolia var. tortifolia | Xylorhiza tortifolia (Torr. & A. Gray) Greene | 12,24 | eFlora |