| Aldama perennans (B.L. Turner & F.G. Davies) E.E. Schill. & Panero, 2011 |
| Aldama phenax (S.F. Blake) E.E. Schill. & Panero, 2011 |
| Aldama pringlei (B.L. Rob. & Greenm.) E.E. Schill. & Panero, 2011 |
| Aldama purisimae (Brandegee) E.E. Schill. & Panero, 2011 |
| Aldama seemannii (Sch. Bip.) E.E. Schill. & Panero, 2011 |
| Aldama squarrosa (Sch. Bip.) E.E. Schill. & Panero, 2011 |
| Aldama subcanescens (S.F. Blake) E.E. Schill. & Panero, 2011 |
| Aldama torresii (B.L. Turner) E.E. Schill. & Panero, 2011 |
| Aldama uniserialis (Hook.) A. Gray, 1850 |
| Alepidocline S.F. Blake, 1934 |
| Alepidocline annua S.F. Blake, 1934 |
| Alepidocline breedlovei (B.L. Turner) B.L. Turner, 1990 |
| Alepidocline macdonaldana B.L. Turner, 1990 |
| Alepidocline pochutlana B.L. Turner, 2011 |
| Alepidocline trifida (J.J. Fay) B.L. Turner, 1990 |
| Allendea La Llave & Lex., 1824 |
| Allendea lanceolata La Llave & Lex., 1824 |
| Allocarpus Kunth, 1820 |
| Allocarpus integrifolius DC., 1836 |
| Allocarpus scabrifolius Hook. & Arn., 1838 |