| Name | Sphaerotheca humuli var. fuliginea (Schlechtendal: Fries) E. S. Salmon |
| Authorship | (Schlechtendal: Fries) E. S. Salmon |
| Rank | Variety |
| Placed in | Sphaerotheca humuli (de Candolle) Burrill |
| Citation | 1900 Mem. Torrey Bot. Club 9: 49 |
| Holdings | 50 Specimens held in the Harvard University Herbaria identified as Sphaerotheca humuli var. fuliginea (Schlechtendal: Fries) E. S. Salmon |
| Identification made in | [no date] (50) |
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