 
| Genus Name | Genus | Grex Name | Year | Author | |
|---|---|---|---|---|---|
| Add+ | Gomesa | Gom | widgrenii | 2009 | (Lindl.) M.W.Chase & N.H.Williams | 
| Add+ | Baptistonia | Bapt | widgrenii | 2004 | (Lindl.) V.P.Castro & Chiron | 
| Add+ | Oncidium | Onc | widgrenii | 1855 | Lindl. | 
| Add+ | Oncidium | Onc | wittmannianum | 2008 | Königer | 
 
 
