| Name | Xylorhiza tortifolia (Torrey) Greene |
| Authorship | (Torrey) Greene |
| Rank | Species |
| Placed in | Xylorhiza Nuttall |
| Holdings | 54 Specimens held in the Harvard University Herbaria identified as Xylorhiza tortifolia (Torrey) Greene |
| Identification made in | [no date] (31), 1972 (19), 1974 (3), 1986 (1) |
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