| Name | Microsphaera alni var. extensa (Cooke & Peck) E. S. Salmon |
| Authorship | (Cooke & Peck) E. S. Salmon |
| Rank | Variety |
| Placed in | Microsphaera alni (de Candolle) G. Winter |
| Citation | 1900 Mem. Torrey Bot. Club 9: 152 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Microsphaera alni var. extensa (Cooke & Peck) E. S. Salmon |
| Identification made in | [no date] (3) |
Copyright © 2013 The President and Fellows of Harvard College | Accessibility