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CCDB → Angiosperms → Euphorbiaceae → Euphorbia → Euphorbia capitellata Engelm.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Euphorbia capitellata Engelm. | Euphorbia capitellata Engelm. | 13 | IPCN online | Keil, D. J. 1976. Chromosome numbers for Euphorbia (Euphorbiaceae) from western North America. Madroño 23: 405–408. | |||
| Euphorbia capitellata Engelm. | Euphorbia capitellata Engelm. | 13 | IPCN75-78 | Keil 1976 |