29. Eumachia deinocalyx (Sandwith) Delprete & J.H. Kirkbr. in J. Bot. Res. Inst. Texas 9: 77. 2015 .

Ξ Psychotria deinocalyx Sandwith in Kew Bull. 1939: 555. 1939 . Ξ Margaritopsis deinocalyx (Sandwith) C.M. Taylor in Syst. Geogr. Pl. 75: 172. 2005 .

Typus: GUYANA: British Guiana, Kibihiu Creek, Wiruni River, Berbice River, 9.II.1938, Fanshawe 39/Forestry Dept. 2683 (holo-: K [K000173645] image seen) .

Note. – This species was known from the Guianas and eastern through southern Venezuela (TAYLOR, 2005), and has also been recently reported from Amazonian northern Brazil (DELPRETE & KIRKBRIDE, 2015; e.g., Farney & Batista 2031, Prance et al. 10647, both at both MO and NY).