| Name | Penstemon crandallii var. glabrescens (Pennell) C. C. Freeman |
| Authorship | (Pennell) C. C. Freeman |
| Rank | Variety |
| Placed in | Penstemon crandallii A. Nelson |
| Citation | 2017 J. Bot. Res. Inst. Texas 11(2): 287 |
| Holdings | 9 Specimens held in the Harvard University Herbaria identified as Penstemon crandallii var. glabrescens (Pennell) C. C. Freeman |
| Identification made in | [no date] (8), 1937 (1) |
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