| Name | Strophostyles helvola var. missouriensis (S. Watson) Britton |
| Authorship | (S. Watson) Britton |
| Rank | Variety |
| Placed in | Strophostyles helvola (Linnaeus) Elliott |
| Citation | 1897 Ill. Fl. N. U.S. [Britton & Brown] 2: 339 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Strophostyles helvola var. missouriensis (S. Watson) Britton |
| Identification made in | [no date] (2), 1966 (1) |
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