| Petrophyes agriostaphys Webb & Berthel. | Monanthes laxiflora (DC.) Bolle |
| Petrophyes brachycaulon Webb & Berthel. | Monanthes brachycaulos (Webb & Berthel.) Lowe |
| Petrophyes microbotrys Bolle & Webb | Monanthes laxiflora (DC.) Bolle |
| Petrophyes minima Bolle | Monanthes minima (Bolle) Christ |
| Petrophyes muralis Webb ex Bolle | Monanthes muralis (Webb ex Bolle) Hook.f. |
| Petrophyes pallens Webb ex Christ | Monanthes pallens (Webb ex Christ) Christ |
| Petrophyes polyphyllum (Haw.) Webb & Berthel. | Monanthes polyphylla Haw. |