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CCDB → Angiosperms → Plantaginaceae → Penstemon → Penstemon cyananthus subsp. longiflorus Pennell
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Penstemon cyananthus subsp. longiflorus Pennell | Penstemon longiflorus (Pennell) S. L. Clark | 8 | IPCN67-71 | CLARK, S.L. 1969. In IOPB chromosome number reports xx. Taxon 18: 213-221. |