| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Aegilotriticum sancti-andreae (Degen) Soó | 0 | 4 | 0 |
| × Comagaria rosea (Mabb.) Büscher & G. H. Loos | 0 | 2 | 0 |
| × Oreonopsis G. D. Rowley | 0 | 0 | 0 |
| Sedum sect. Pachysedum | 0 | 3 | 0 |
| Aa | 1 | 8 | 0 |
| Aa achalensis Schltr. | 0 | 2 | 0 |
| Aa colombiana Schltr. | 0 | 0 | 0 |
| Aa matthewsii (Rchb. fil.) Schltr. | 0 | 3 | 0 |
| Aa paleacea (Kunth) Rchb. fil. | 0 | 1 | 0 |
| Aa trilobulata Schltr. | 0 | 0 | 0 |
| Aa weddelliana (Rchb. fil.) Schltr. | 0 | 2 | 0 |
| Aaaba | 1 | 0 | 0 |
| Aaaba nodosus (Kerremans 1898) | 0 | 0 | 0 |
| Aacanthocnema | 1 | 11 | 0 |
| Aacanthocnema dobsoni (Froggatt 1903) | 0 | 11 | 0 |
