| Psychotria microdesmia Oerst., 1853 |
| Psychotria microdon (DC.) Urb., 1928 |
| Psychotria minarum Standl. & Steyerm., 1947 |
| Psychotria miradorensis (Oerst.) Hemsl., 1881 |
| Psychotria mirandae C.W. Ham., 1988 |
| Psychotria molinae Standl., 1950 |
| Psychotria molinarum Lorence, 1997 |
| Psychotria molliramis (K. Schum. & K. Krause) Steyerm., 1972 |
| Psychotria mollis Poir., 1804 |
| Psychotria mombachensis Standl., 1930 |
| Psychotria morae Pol., 1877 |
| Psychotria namwingensis Govaerts, 2008 |
| Psychotria nervosa Sw., 1788 |
| Psychotria nicaraguensis Benth., 1853 |
| Psychotria nicotianifolia M. Martens & Galeotti, 1844 |
| Psychotria nigrescens De Wild., 1924 |
| Psychotria nubiphila Dwyer, 1980 |
| Psychotria oaxacana Standl., 1926 |
| Psychotria oaxacensis Borhidi & Salas-Mor., 2009 |
| Psychotria obovata (Oerst.) Hemsl., 1881 |