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CCDB → Angiosperms → Apiaceae → Cymopterus → Cymopterus williamsii R. L. Hartm. & Constance
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Cymopterus williamsii R. L. Hartm. & Constance | Cymopterus williamsii R. L. Hartm. & Constance | 11 | IPCN online | Hartman, R. L. & L. Constance. 1985. Two new species of Cymopterus (Umbelliferae) from western North America. Brittonia 37(1): 88–95. |