| Psychotria calophylla Standl., 1916 |
| Psychotria calopogon L.O. Williams, 1974 |
| Psychotria capitata Ruiz & Pav., 1799 |
| Psychotria carthagenensis Jacq., 1760 |
| Psychotria catillicalyx Dwyer, 1980 |
| Psychotria cerroazulensis Dwyer, 1966 |
| Psychotria chagrensis Standl., 1925 |
| Psychotria chamelaensis C.M. Taylor & Dominguez-Lic., 2007 |
| Psychotria chamissoana (Loes.) Standl., 1927 |
| Psychotria chiapensis Standl., 1926 |
| Psychotria chlorobotrya Standl., 1926 |
| Psychotria chrysocalymma L.O. Williams, 1974 |
| Psychotria clivorum Standl. & Steyerm., 1944 |
| Psychotria costivenia Griseb., 1862 |
| Psychotria costivenia subsp. altorum (Standl. & Steyerm.) Borhidi, 2004 |
| Psychotria costivenia subsp. costivenia Griseb., 1862 |
| Psychotria costivenia var. altorum (Standl. & Steyerm.) C.W. Ham., 1988 |
| Psychotria costivenia var. costivenia Griseb., 1862 |
| Psychotria crebrinervia Standl., 1929 |
| Psychotria crocea Sw., 1788 |