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CCDB → Angiosperms → Aizoaceae → Psilocaulon
| Taxon name | Status | Median (n) |
| Psilocaulon articulatum (Thunb.) N. E. Br. | Accepted | 18 |
| Psilocaulon bicorne Schwantes | Accepted | 27 |
| Psilocaulon coriarium N. E. Br. | Accepted | 63 |
| Psilocaulon dinteri Schwantes | Accepted | 18 |
| Psilocaulon gessertianum Schwantes | Accepted | 18 |
| Psilocaulon granulicaule Schwantes | Accepted | 9 |
| Psilocaulon junceum Schwantes | Accepted | 63 |
| Psilocaulon leptarthron N. E. Br. | Accepted | 63 |
| Psilocaulon salicornioides Schwantes | Accepted | 18 |
| Psilocaulon subnodosum N. E. Br. | Accepted | 27 |
| Mesembryanthemum articulatum Thunb. | Synonym of Psilocaulon articulatum (Thunb.) N. E. Br. | 18 |
| Mesembryanthemum salicornioides Pax | Synonym of Psilocaulon salicomioides (Pax) Schwantes | 18 |