| Name | Arabis platysperma var. howellii (Watson) Jepson |
| Authorship | (Watson) Jepson |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Arabis platysperma A. Gray |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Arabis platysperma var. howellii (Watson) Jepson |
| Identification made in | 1939 (4) |
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