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CCDB → Angiosperms → Papaveraceae → Romneya → Romneya coulteri Harv.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Romneya coulteri Harv. | Romneya coulteri Harv. | 38 | IPCN online | Safonova, I. N. 1991. Chromosome numbers in some species of the family Papaveraceae. Bot. Žhurn. (Moscow & Leningrad) 76: 904–905. | |||
| ! | Romneya coulteri Harv. | Romneya coulteri Harv. | 38 | Darlington, 1955 | Bilquez, D. 1951 | ||
| Romneya coulteri Harv. | Romneya coulteri Harv. | 19 | Cave1959 | Ernst 1959 |