| Lamiaceae | |
Plectranthus aberdaricus
| T.C.E. Fr. | Notizbl. Bot. Gart. Berlin-Dahlem 11: 27 | 1930 |
| Lamiaceae | |
Plectranthus acariformis
| P.I. Forst. | Austrobaileya 9: 279 | 2014 |
| Lamiaceae | |
Plectranthus acaulis
| Brummitt & Seyani | Kew Bull. 42: 695 | 1987 |
| Lamiaceae | |
Plectranthus actites
| P.I. Forst. | Austrobaileya 4: 163 | 1994 |
| Lamiaceae | |
Plectranthus adenanthus
| Diels | Notes Roy. Bot. Gard. Edinburgh 5(25): 228 | 1912 |
| Lamiaceae | |
Plectranthus adenoloma
| Hand.-Mazz. | Symb. Sin. 7(4): 938 | 1936 |
| Lamiaceae | |
Plectranthus adenolomus
| Hand.-Mazz. | Symb. Sin. 7: 938 | 1936 |
| Lamiaceae | |
Plectranthus adenophorus
| Gürke | Bot. Jahrb. Syst. 30: 398 | 1901 |
| Lamiaceae | |
Plectranthus aegyptiacus
| (Forssk.) C. Chr. | Dansk Bot. Ark. 4(3): 21 | 1922 |
| Lamiaceae | |
Plectranthus africanus
| (Baker ex Scott Elliot) A.J. Paton | Kew Bull. 64: 259 | 2009 |
| Lamiaceae | |
Plectranthus agnewii
| Lukhoba & A.J. Paton | Kew Bull. 55(4): 957 | 2000 |
| Lamiaceae | |
Plectranthus albicalyx
| Suddee | Kew Bull. 59: 401 | 2004 |
| Lamiaceae | |
Plectranthus albidus
| Baker | J. Linn. Soc., Bot. 25: 341 | 1890 |
| Lamiaceae | |
Plectranthus albocaeruleus
| N.E. Br. | Bull. Misc. Inform. Kew 1901: 130 | 1901 |
| Lamiaceae | |
Plectranthus alboviolaceus
| Gürke | Bot. Jahrb. Syst. 30: 397 | 1901 |
| Lamiaceae | |
Plectranthus albus
| Gürke | Bot. Jahrb. Syst. 19. 202 | 1894 |
| Lamiaceae | |
Plectranthus aliciae
| (Codd) Van Jaarsv. & T.J. Edwards | Bothalia 27: 5 | 1997 |
| Lamiaceae | |
Plectranthus allenii
| C.H. Wright | Bull. Misc. Inform. Kew 1908: 437 | 1908 |
| Lamiaceae | |
Plectranthus alloplectus
| S.T. Blake | Contr. Queensland Herb. 9: 29 | 1971 |
| Lamiaceae | |
Plectranthus almamii
| A. Chev. | J. Bot. 22: 120 | 1909 |
| Lamiaceae | |
Plectranthus alpinus
| (Vatke) Ryding | Bot. Jahrb. Syst. 121(2): 147 | 1999 |
| Lamiaceae | |
Plectranthus alstonianus
| (Hutch. & Dandy) ined. | | |
| Lamiaceae | |
Plectranthus altanmouiensis
| T.C. Wilson, P.I. Forst. & M.A.M. Renner | Telopea 21: 84 | |
| Lamiaceae | |
Plectranthus amaniensis
| Gürke | Bot. Jahrb. Syst. 36: 134 | 1905 |
| Lamiaceae | |
Plectranthus ambiguus
| (Bolus) Codd | Bothalia 8: 159 | 1964 |
| Lamiaceae | |
Plectranthus amboinicus
| (Lour.) Spreng. | Syst. Veg. [Sprengel] 2: 690 | 1825 |
| Lamiaceae | |
Plectranthus amethystoides
| Benth. | Labiat. Gen. Spec. 45 | 1832 |
| Lamiaceae | |
Plectranthus amicorum
| S.T. Blake | Contr. Queensland Herb. 9: 26 | 1971 |
| Lamiaceae | |
Plectranthus amiculatus
| T.C. Wilson, P.I. Forst. & M.A.M. Renner | Telopea 21: 81 | 2018 |
| Lamiaceae | |
Plectranthus amoenus
| P.I. Forst. | Austrobaileya 4: 656 | 1997 |
| Lamiaceae | |
Plectranthus amplexicaulis
| Hedge | Fl. Madagasc. 175: 203 | 1998 |
| Lamiaceae | |
Plectranthus anamudianus
| Smitha & Sunojk. | Phytotaxa 284(1): 52 | 2016 |
| Lamiaceae | |
Plectranthus andongensis
| (Hiern) K. Schum. | Just's Bot. Jahresber. 28(1): 486 | 1902 |
| Lamiaceae | |
Plectranthus angulatus
| Hedge | Fl. Madagasc. 175: 211 | 1998 |
| Lamiaceae | |
Plectranthus angustifolius
| Dunn | Notes Roy. Bot. Gard. Edinburgh 8(37): 154–155 | 1913 |
| Lamiaceae | |
Plectranthus annuus
| A.J. Paton | Fl. Trop. E. Africa Lamiac.: 270 | 2009 |
| Lamiaceae | |
Plectranthus antongilicus
| Hedge | Fl. Madagasc. 175: 160–161 | 1998 |
| Lamiaceae | |
Plectranthus apoensis
| (Elmer) H. Keng | Gard. Bull. Singapore 24: 147 | 1969 |
| Lamiaceae | |
Plectranthus apreptus
| S.T. Blake | Contr. Queensland Herb. 9: 47 | 1971 |
| Lamiaceae | |
Plectranthus apricus
| P.I. Forst. | Austrobaileya 4: 165 | 1994 |
| Lamiaceae | |
Plectranthus arabicus
| (Forssk.) E.A. Bruce | Bull. Misc. Inform. Kew 1935: 324 | 1935 |
| Lamiaceae | |
Plectranthus arenicola
| P.I. Forst. | Muelleria 7: 375 | 1991 |
| Lamiaceae | |
Plectranthus argentatus
| S.T. Blake | Contr. Queensland Herb. 9: 27 | 1971 |
| Lamiaceae | |
Plectranthus argentifolius
| Ryding | Kew Bull. 54: 122 | 1999 |
| Lamiaceae | |
Plectranthus aromaticus
| Roxb. | Hort. Bengal. 45 | 1814 |
| Lamiaceae | |
Plectranthus arthropodus
| Briq. | Bull. Herb. Boissier, sér. 2, 3: 1073 | 1903 |
| Lamiaceae | |
Plectranthus asirensis
| (Benth.) J.R.I. Wood | Kew Bull. 37: 601 | 1983 |
| Lamiaceae | |
Plectranthus asper
| (B. Heyne ex Roth) Spreng. | Syst. Veg. [Sprengel] 2: 690 | 1825 |
| Lamiaceae | |
Plectranthus assamicus
| S.M. Mukerjee | J. Indian Bot. Soc. 19: 82 | 1940 |
| Lamiaceae | |
Plectranthus assurgens
| (Baker) J.K. Morton | J. Soc. Lond. Bot. 58: 267 | 1962 |
| Lamiaceae | |
Plectranthus asymmetricus
| A.J. Paton | Fl. Zambes. 8(8): 207 | 2013 |
| Lamiaceae | |
Plectranthus atroviolaceus
| Hedge | Fl. Madagasc. 175: 156–157 | 1998 |
| Lamiaceae | |
Plectranthus aulihanensis
| (Schweinf. & Volkens) ined. | | |
| Lamiaceae | |
Plectranthus auriculatus
| Robyns & Lebrun | Rev. Zool. Bot. Africaines 16: 353 | 1928 |
| Lamiaceae | |
Plectranthus aurifer
| Dinter ex Launert | Mitt. Bot. Staatssamml. München 2: 312 | 1957 |
| Lamiaceae | |
Plectranthus auriglandulosus
| A.J. Paton | Fl. Trop. E. Africa Lamiaceae: 307 | 2009 |
| Lamiaceae | |
Plectranthus australis
| R. Br. | Prodr. 506 | 1810 |
| Lamiaceae | |
Plectranthus autranii
| (Briq.) A.J. Paton | Fl. Trop. E. Africa Lamiaceae: 326 | 2009 |
| Lamiaceae | |
Plectranthus axillariflorus
| Honda | Bot. Mag. (Tokyo) 44: 407 | 1930 |
| Lamiaceae | |
Plectranthus barbatus
| Andrews | Bot. Repos. 9: , t. 594 | 1809 |
| Lamiaceae | |
Plectranthus bariensis
| Ryding | Kew Bull. 54: 123 | 1999 |
| Lamiaceae | |
Plectranthus barrelieri
| (Roth) Spreng. | Syst. Veg. [Sprengel] 2: 691 | 1825 |
| Lamiaceae | |
Plectranthus batianoffii
| P.I. Forst. | Austrobaileya 7: 707 | 200i |
| Lamiaceae | |
Plectranthus baumii
| Gürke | Kunene-Sambesi Exped. 356 . | 1903 |
| Lamiaceae | |
Plectranthus beddomei
| (Benth.) Raizada | Indian Forester 84: 503 | 1958 |
| Lamiaceae | |
Plectranthus behrii
| Compton | J. S. African Bot. 11: 122 | 1945 |
| Lamiaceae | |
Plectranthus bellus
| P.I. Forst. | Austrobaileya 8: 388 | 2011 |
| Lamiaceae | |
Plectranthus benthamianus
| Miq. | Fl. Ned. Ind. 2: 946 | 1858 |
| Lamiaceae | |
Plectranthus berdaricus
| T.C.E. Fr. | Notizbl. Bot. Gart. Berlin-Dahlem 11: 27 | 1930 |
| Lamiaceae | * |
Plectranthus bernardii
| Doan | Fl. Indo-Chine 4: 949 | 1936 |
| Lamiaceae | |
Plectranthus betamponus
| Hedge | Fl. Madagasc. 175: 175–176 | 1998 |
| Lamiaceae | |
Plectranthus betonicifolius
| Baker | Bull. Misc. Inform. Kew 1895: 72 | 1895 |
| Lamiaceae | |
Plectranthus bicolor
| Blume | Bijdr. Fl. Ned. Ind. (14): 837 | 1826 |
| Lamiaceae | |
Plectranthus bifidocalyx
| Dunn | Bull. Misc. Inform. Kew 1914(9): 328–329 | 1914 |
| Lamiaceae | |
Plectranthus bifidus
| A.J. Paton | Fl. Zambes. 8(8): 235 | 2013 |
| Lamiaceae | |
Plectranthus biflorus
| Baker | Fl. Trop. Afr. 5: 402 | 1900 |
| Lamiaceae | |
Plectranthus bipartitus
| P.I. Forst. | Austrobaileya 9: 208 | 2014 |
| Lamiaceae | |
Plectranthus bipinnatus
| A.J. Paton | Kew Bull. 58: 488 | 2003 |
| Lamiaceae | |
Plectranthus bishopianus
| Gamble | Bull. Misc. Inform. Kew 1924: 265 | 1924 |
| Lamiaceae | |
Plectranthus blakei
| P.I. Forst. | Muelleria 7: 417 | 1992 |
| Lamiaceae | |
Plectranthus blumei
| (Benth.) Launert | Mitt. Bot. Staatssamml. München 7: 301 | 1968 |
| Lamiaceae | |
Plectranthus bojeri
| (Benth.) Hedge | Fl. Madagasc. 175: 218 | 1998 |
| Lamiaceae | |
Plectranthus bolusii
| T. Cooke | Bull. Misc. Inform. Kew 1909: 377 | 1909 |
| Lamiaceae | |
Plectranthus bongensis
| Baker | Fl. Trop. Afr. 5: 410 | 1900 |
| Lamiaceae | |
Plectranthus bosseri
| Hedge | Fl. Madagasc. 175: 214–216, t. 24, carte 11 | 1998 |
| Lamiaceae | |
Plectranthus botryosus
| A.J. Paton | Fl. Trop. E. Africa Lamiaceae: 335 | 2009 |
| Lamiaceae | |
Plectranthus bourneae
| Gamble | Bull. Misc. Inform. Kew 1924: 264 | 1924 |
| Lamiaceae | |
Plectranthus bracteatus
| (Dunn) Suddee | Kew Bull. 59: 399 | 2004 |
| Lamiaceae | |
Plectranthus bracteolatus
| A.J. Paton | Fl. Trop. E. Africa Lamiaceae: 245 | 2009 |
| Lamiaceae | |
Plectranthus brandisii
| Prain | J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 59(2): 296 | 1890 |
| Lamiaceae | |
Plectranthus brevicaulis
| (Baker) Hedge | Fl. Madagasc. 175: 154 | 1998 |
| Lamiaceae | |
Plectranthus brevifolius
| Hand.-Mazz. | Acta Horti Gothob. 13(10): 368–369 | 1939 |
| Lamiaceae | |
Plectranthus brevimentum
| T.J. Edwards | Bothalia 35: 149 | 2005 |
| Lamiaceae | |
Plectranthus brevipes
| Baker | Fl. Trop. Afr. 5: 406 | 1900 |
| Lamiaceae | |
Plectranthus briquetii
| (Baker) ined. | | |
| Lamiaceae | |
Plectranthus buchananii
| Baker | Fl. Trop. Afr. 5: 402 | 1900 |
| Lamiaceae | |
Plectranthus buckia
| Buch.-Ham. ex D. Don | Prodr. Fl. Nepal. 117 | 1825 |
| Lamiaceae | |
Plectranthus buergeri
| Miq. | Ann. Mus. Bot. Lugduno-Batavi 2: 101 | 1865 |
| Lamiaceae | |
Plectranthus bullatus
| Benth. | Prodr. 12: 56 | 1848 |
| Lamiaceae | * |
Plectranthus bullatus
| Robyns & Lebrun | Rev. Zool. Bot. Africaines 16: 355 | 1928 |