| Name | Gayophytum diffusum subsp. parviflorum F.H. Lewis & Szweyk. |
| Authorship | F.H. Lewis & Szweyk. |
| Rank | Subspecies |
| Placed in | Gayophytum diffusum Torrey & A. Gray |
| Citation | 1964 Brittonia 16(4): 386–389, f. 5B, 17B, 18 [map] |
| Holdings | 231 Specimens held in the Harvard University Herbaria identified as Gayophytum diffusum subsp. parviflorum F.H. Lewis & Szweyk. |
| Identification made in | [no date] (194), 1962 (37) |
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