 
| Genus Name | Genus | Grex Name | Year | Author | |
|---|---|---|---|---|---|
| Add+ | Mesadenella | Mdla | tonduzii | 1953 | (Schltr.) Pabst & Garay | 
| Add+ | Mesadenella | Mdla | petenensis | 1982 | (L.O.Williams) Garay | 
| Add+ | Spiranthes | Spir | petenensis | 1973 | L.O.Williams | 
| Add+ | Spiranthes | Spir | umbraticola | 1973 | L.O.Williams | 
| Add+ | Stenorrhynchos | Strs | petense | 1986 | (L.O.Williams) Burns-Bal. & E.W.Greenw. | 
| Add+ | Stenorrhynchos | Strs | tonduzii | 1920 | (Schltr.) Schltr. | 
 
 
