| Micrograph No. | Family | Scientific name and Author(s) | Aperturation | Ornamentation |
| 583 | Asteraceae | Bidens laevis (L.) Britton, Sterns, Poggenburg | tricolporate | echinate |
| 584 | Asteraceae | Bidens aristosa (Michaux) Britton var. retrorsa (Sherff) Wunderlin | tricolporate | echinate |
| 585 | Asteraceae | Polymnia canadensis L. | tricolporate | echinate |
| 586 | Asteraceae | Borrichia frutescens (L.) DC. | tricolporate | echinate |
| 587 | Asteraceae | Helianthus annuus L. | tricolporate | echinate |
| 588 | Asteraceae | Helianthus maximiliani Schrader | tricolporate | echinate |