| Name | Schismatoglottis spruceana var. williamsii (Steyermark) G. S. Bunting |
| Authorship | (Steyermark) G. S. Bunting |
| Rank | Variety |
| Placed in | Schismatoglottis spruceana (Schott) G. S. Bunting |
| Citation | 1960 Ann. Missouri Bot. Gard. 47: 71 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Schismatoglottis spruceana var. williamsii (Steyermark) G. S. Bunting |
| Identification made in | 1992 (1) |