Palicourea tetragona (Donn. Sm.) C.M. Taylor & Lorence in Novon 20 (4): 490–491. 2010 sec. Villaseñor & al. 2013
- ≡Cephaelis tetragona Donn. Sm. in Bot. Gaz. 61(5): 376. 1916 syn. sec. ???
- =Psychotria chiapensis Standl. in Contr. U.S. Natl. Herb. 23: 1390. 1926 syn. sec. ???