| Name | Platycaulos mahonii subsp. humbertii (Chermezon) H. P. Linder & C. R. Hardy |
| Authorship | (Chermezon) H. P. Linder & C. R. Hardy |
| Rank | Subspecies |
| Placed in | Platycaulos mahonii (N. E. Brown) H. P. Linder |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Platycaulos mahonii subsp. humbertii (Chermezon) H. P. Linder & C. R. Hardy |
| Identification made in | 2015 (1) |