31. Eumachia guianensis (Bremek.) Delprete & J.H. Kirkbr. in J. Bot. Res. Inst. Texas 9: 77. 2015 .

Ξ Chytropsia guianensis Bremek. in Receuil Trav. Bot. Néerl. 31: 292. 1934 . Ξ Psychotria moroidea Steyerm. in Mem. New York Bot. Gard. 23: 485. 1972 [nom. nov.] [non Psychotria guianensis (Aubl.) Raeusch.]. Ξ Margaritopsis guianensis (Bremek.) C.M. Taylor in Syst. Geogr. Pl. 75: 172. 2005 .

Lectotypus (designated by DELPRETE & KIRKBRIDE, 2015: 77): SURINAME: Emma Range, 600 m, 15.III.1922, Gonggrijp & Stahel B.W. 5667 (U; isolecto-: BM [BM001009040] image seen) .

Note. – This species is found in the Guianas (TAYLOR, 2005) and northern to central Brazil (DELPRETE & KIRKBRIDE, 2015).