CCDB → Angiosperms → Compositae → Roldana → Roldana barba-johannis (DC.) H. Rob. & Brettell
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Roldana barba-johannis (DC.) H. Rob. & Brettell | Roldana barba-johannis (DC.) H. Rob. & Brettell | 30(1) | Asteracea | Jansen & S. 1980 Amer. J. Bot. | ||
| Senecio grahamii Benth. | Roldana barba-johannis (DC.) H. Rob. & Brettell | 10(1) | Asteracea | Gupta, R. C. et al. 2010a Cytologia | |||
| Senecio grahamii Benth. | Roldana barba-johannis (DC.) H. Rob. & Brettell | 10 | IPCN online | Gupta, R. C. & B. S. Gill. 1979. In IOPB chromosome number reports LXIV. Taxon 28: 401–402. | |||
| ! | Senecio donnell-smithii J. M. Coult. | Roldana barba-johannis (DC.) H. Rob. & Brettell | 60 | IPCN73-74 | POWELL, A.M., D.W. KYHOS, & P.H. RAVEN. 1974. Chromosome numbers in Compositae. X. Amer. J. Bot. 61: 909-913. |