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CCDB → Angiosperms → Compositae → Sonchus → Sonchus dregeanus DC.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Sonchus dregeanus DC. | Sonchus dregeanus DC. | 18(1) | Asteracea | Boulos 1970b Taxon | |||
| Sonchus dregeanus DC. | Sonchus dregeanus DC. | 18 | IPCN67-71 | BOULOS, L. 1970. In IOPB chromosome number reports XXIX. Taxon 19: 801-802-:- |