| Name | Penstemon eatonii var. undosus M. E. Jones |
| Authorship | M. E. Jones |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Penstemon eatonii A. Gray |
| Citation | 1895 Proc. Calif. Acad. Sci. ser. 2, 5: 715 |
| Holdings | 24 Specimens held in the Harvard University Herbaria identified as Penstemon eatonii var. undosus M. E. Jones |
| Identification made in | [no date] (19), 1930 (4), 1935 (1) |
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