| Name | Geranium carolinianum var. sphaerospermum (Fernald) Breitung |
| Authorship | (Fernald) Breitung |
| Rank | Variety |
| Placed in | Geranium carolinianum Linnaeus |
| Citation | 1957 Amer. Midl. Naturalist 58(1): 43 |
| Holdings | 13 Specimens held in the Harvard University Herbaria identified as Geranium carolinianum var. sphaerospermum (Fernald) Breitung |
| Identification made in | [no date] (9), 1981 (4) |
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