| Name | Porophyllum ruderale var. macrocephalum (de Candolle) Cronquist |
| Authorship | (de Candolle) Cronquist |
| Rank | Variety |
| Placed in | Porophyllum ruderale (Jacquin) Cassini |
| Citation | 1970 Madroño 20: 255 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Porophyllum ruderale var. macrocephalum (de Candolle) Cronquist |
| Identification made in | 2025 (1) |
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