| Psychopterys mcvaughii W.R.Anderson & S.Corso | R. McVaugh 23243 with M. F. Baad, W. R. Anderson & C. W. Laskowski,
24 Mar 1965 | Mexico. Jalisco. South-facing foothills of Sierra de Manantlán (ca. 40 km. southeast of Autlán], 2-3 km. above the abandoned site of Durazno, along the lumber-road between El Chante and Cuzalapa. | isotype | 1043151 |  |
| Psychopterys ornata W.R.Anderson & S.Corso | D. E. Breedlove 35105
13 May 1973 | Mexico. Chiapas. La Trinitaria Mun. East of Laguna Tzikaw,, Monte Bello National Park. | isotype | 1043195 |  |
| Psychopterys multiflora (Nied.) W.R.Anderson & S.Corso | | | | 04247946 | |
| Psychopterys multiflora (Nied.) W.R.Anderson & S.Corso | | | | 04247950 | |
| Psychopterys multiflora (Nied.) W.R.Anderson & S.Corso | | | | 03176721 |  |
| Psychopterys dipholiphylla (Small) W.R.Anderson & S.Corso | | | | 04230478 |  |
| Psychopterys multiflora (Nied.) W.R.Anderson & S.Corso | | | | 03195332 |  |
| Psychopterys polycarpa (Brandegee) W.R.Anderson & S.Corso | | | | 03196337 |  |
| Psychopterys psilocarpa W.R.Anderson & S.Corso | J. A. Steyermark 45617
01 Apr 1942 - 02 Apr 1942 | Guatemala. Alta Verapaz. Cerro Chinajá, between Finca Yalpemech and Chinajá, above source of Río San Diego. | isotype | 1043196 |  |
| Psychopterys dipholiphylla (Small) W.R.Anderson & S.Corso | | | | 05298965 | |
| Psychopterys dipholiphylla (Small) W.R.Anderson & S.Corso | | | | 5298966 | |
| Psychopterys dipholiphylla (Small) W.R.Anderson & S.Corso | | | | 5298967 | |
| Psychopterys dipholiphylla (Small) W.R.Anderson & S.Corso | | | | 5298968 | |
| Psychopterys dipholiphylla (Small) W.R.Anderson & S.Corso | | | | 5298969 | |
| Psychopterys dipholiphylla (Small) W.R.Anderson & S.Corso | | | | 5298970 | |
| Psychopterys dipholiphylla (Small) W.R.Anderson & S.Corso | | | | 5298971 | |
| Psychopterys dipholiphylla (Small) W.R.Anderson & S.Corso | | | | 5298972 | |
| Psychopterys dipholiphylla (Small) W.R.Anderson & S.Corso | | | | 5298973 | |
| Psychopterys dipholiphylla (Small) W.R.Anderson & S.Corso | | | | 5298974 | |
| Psychopterys dipholiphylla (Small) W.R.Anderson & S.Corso | | | | 5298975 | |
| Psychopterys dipholiphylla (Small) W.R.Anderson & S.Corso | | | | 5298976 | |
| Psychopterys multiflora (Nied.) W.R.Anderson & S.Corso | | | | 05298994 | |
| Psychopterys multiflora (Nied.) W.R.Anderson & S.Corso | | | | 5298995 | |
| Psychopterys multiflora (Nied.) W.R.Anderson & S.Corso | | | | 5298996 | |
| Psychopterys multiflora (Nied.) W.R.Anderson & S.Corso | | | | 5298997 | |
| Psychopterys multiflora (Nied.) W.R.Anderson & S.Corso | | | | 5298998 | |
| Psychopterys polycarpa (Brandegee) W.R.Anderson & S.Corso | | | | 05298999 | |
| Psychopterys polycarpa (Brandegee) W.R.Anderson & S.Corso | | | | 5299000 | |
| Psychopterys polycarpa (Brandegee) W.R.Anderson & S.Corso | | | | 5299001 | |
| Psychopterys rivularis (C.V.Morton & Standl.) W.R.Anderson & S.Corso | | | | 5299002 | |
| Psychopterys rivularis (C.V.Morton & Standl.) W.R.Anderson & S.Corso | | | | 05299003 | |
| Psychopterys rivularis (C.V.Morton & Standl.) W.R.Anderson & S.Corso | | | | 05299004 | |