| Micrograph No. | Family | Scientific name and Author(s) | Aperturation | Ornamentation |
| 319, 320 | Fabaceae | Sophora secundiflora (Ortega) Lagasca ex DC. | tricolporate | reticulate |
| 321, 322, 323 | Rutaceae | Thamnosma texana (Gray) Torrey | tricolporate | reticulate |
| 324 | Polygonaceae | Brunnichia ovata (Walter) Shinners | tricolporate | reticulate |