| Name | Porterella carnosula (Hooker & Arnott) Torrey | 
| Authorship | (Hooker & Arnott) Torrey | 
| Rank | Species | 
| Placed in | Porterella | 
| Citation | 1872 Prelim. Rep. U.S. Geol. Surv. Montana 488 | 
| Holdings | 43 Specimens held in the Harvard University Herbaria identified as Porterella carnosula (Hooker & Arnott) Torrey | 
| Identification made in | [no date] (33), 1991 (10) | 
