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CCDB → Angiosperms → Compositae → Hymenoxys → Hymenoxys richardsonii subsp. richardsonii
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Hymenoxys richardsonii subsp. richardsonii | Hymenoxys richardsonii (Hook.) Cockerell | 15 | IPCN66 | Strother 1966a |