| Name | Arenaria congesta var. cephaloidea (Rydberg) Maguire |
| Authorship | (Rydberg) Maguire |
| Rank | Variety |
| Placed in | Arenaria congesta Nuttall |
| Citation | 1947 Bull. Torrey Bot. Club 74(1): 46 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Arenaria congesta var. cephaloidea (Rydberg) Maguire |
| Identification made in | [no date] (3) |
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