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CCDB → Angiosperms → Plantaginaceae → Penstemon → Penstemon hirsutus (L.) Willd.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Penstemon hirsutus (L.) Willd. | Penstemon hirsutus (L.) Willd. | 16 | IPCN66 | Bowden 1966a | |||
| Penstemon hirsutus (L.) Willd. | Penstemon hirsutus (L.) Willd. | 8 | IPCN75-78 | Faasen & Nadeau 1976 |