| Name | Pterostylis tenuissima Nicholls | 
| Authorship | Nicholls | 
| Rank | Species | 
| Placed in | Pterostylis | 
| Citation | 1950 Victorian Naturalist 67: 46–48. | 
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Pterostylis tenuissima Nicholls | 
| Identification made in | [no date] (1) |