| Name | Noccaea fendleri subsp. siskiyouense (P. K. Holmgren) Al-Shehbz & M. Koch |
| Authorship | (P. K. Holmgren) Al-Shehbz & M. Koch |
| Rank | Subspecies |
| Placed in | Noccaea fendleri (A. Gray) Holub |
| Holdings | 9 Specimens held in the Harvard University Herbaria identified as Noccaea fendleri subsp. siskiyouense (P. K. Holmgren) Al-Shehbz & M. Koch |
| Identification made in | [no date] (8), 2013 (1) |