CCDB is a community resource. If you are aware of any missing data or if any of the counts are erroneous, please submit new counts, or report erroneous counts.
CCDB → Angiosperms → Compositae → Porophyllum → Porophyllum macrocephalum DC.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Porophyllum macrocephalum DC. | Porophyllum ruderale subsp. macrocephalum (DC.) R. R. Johnson | 11(1) | Asteracea | Turner & F. 1966 Amer. J. Bot. | |||
| Porophyllum macrocephalum DC. | Porophyllum ruderale subsp. macrocephalum (DC.) R. R. Johnson | 11 | IPCN66 | Turner & Flyr 1966 | |||
| Porophyllum macrocephalum DC. | Porophyllum ruderale subsp. macrocephalum (DC.) R. R. Johnson | 11 | IPCN67-71 | POWELL, A.M. & s. SIKES. 1970. Chromosome numbers of some chihuahuan desert Compositae. Southw. Naturalist 15: 175-186. | |||
| Porophyllum macrocephalum DC. | Porophyllum ruderale subsp. macrocephalum (DC.) R. R. Johnson | 22 | Fedorov, 1974 | Turner, Flyr 1966 |