| Name | Grindelia robusta var. rigida A. Gray |
| Authorship | A. Gray |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Grindelia robusta Nuttall |
| Citation | 1876 Bot. California 1: 304 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Grindelia robusta var. rigida A. Gray |
| Identification made in | [no date] (2) |
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