| Name | Tristaniopsis whiteana subsp. monostemon P. S. Ashton | 
| Authorship | P. S. Ashton | 
| Rank | Subspecies | 
| Placed in | Tristaniopsis whiteana (Griff.) Paul G.Wilson & J.T.Waterh. | 
| Citation | 2005 Gard. Bull. Singapore 57:277 | 
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Tristaniopsis whiteana subsp. monostemon P. S. Ashton | 
| Identification made in | [no date] (1) |