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CCDB → Angiosperms → Compositae → Xylorhiza → Xylorhiza cognata (H. M. Hall) T. J. Watson
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Xylorhiza cognata (H. M. Hall) T. J. Watson | Xylorhiza cognata (H. M. Hall) T. J. Watson | 6(1) | 12(3) | Asteracea | Watson 1978 Madrono | ||
| ! | Xylorhiza cognata (H. M. Hall) T. J. Watson | Xylorhiza cognata (H. M. Hall) T. J. Watson | 6 | IPCN online | Watson, T. J. 1978. Chromosome numbers in Xylorhiza Nuttall (Asteraceae Astereae). Madroño 25: 205–210. | ||
| ! | Xylorhiza cognata (H. M. Hall) T. J. Watson | Xylorhiza cognata (H. M. Hall) T. J. Watson | 12 | eFlora |