No | Taxon | Bentham (1832-1836) | Benth. & Hook. (1876) | Briquit (1897) | Codd (1975) | Present study |
1 | Plectranthus arabicus E. A. Bruce | Section: Isodon | Section: Isodon | Subgenus: Isodon | - | Group A |
2 | Plectranthus asirensis J. R. I. Wood | - | - | - | - | Group D |
3 | Plectranthus barbatus Andrews | Section: Calceolus (Coleus) | Section: Germanea | Subgenus: Germanea | Subgen. Calceolanthus | Group B |
4 | Plectranthus cylindraceus Hochst. ex Benth | Section: Germanea | Section: Germanea | Subgenus: Germanea | Subgen. Burnatastrum | Group C |
5 | Plectranthus hijazensis Abdel Khalik, K | - | - | - | - | Group D |
6 | Plectranthus Pseudo marrubioides R.H. Willemse | Section: Germanea | Section: Germanea | Subgenus: Germanea | Subgen. Burnatastrum | Group C |
7 | Plectranthus tenuiflorus (Vatke) Agnew | Section: Aromaria (Coleus) | Section: Germanea | Subgenus: Germanea | Subgen. Coleus | Group D |