| Name | Arachnis longicaulis (Schlechter) L. O. Williams |
| Authorship | (Schlechter) L. O. Williams |
| Rank | Species |
| Placed in | Arachnis Blume |
| Citation | 1937 Bot. Mus. Leafl. 5: 31 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Arachnis longicaulis (Schlechter) L. O. Williams |
| Identification made in | [no date] (2), 1936 (1), 2012 (1) |