| Acelica Rizzini | Justicia L. | | | Acelica Rizzini | Justicia L. | Acanthaceae |
| Adelaster Lindl. ex Veitch | Fittonia Coem. | | | Adelaster Lindl. ex Veitch | Fittonia Coem. | Acanthaceae |
| Adhatoda Mill. | Justicia L. | | | Adhatoda Mill. | Justicia L. | Acanthaceae |
| Afrofittonia Lindau | | a | | Afrofittonia Lindau | | Acanthaceae |
| Ambongia Benoist | | a | | Ambongia Benoist | | Acanthaceae |
| Amphiestes S. Moore | Hypoestes Sol. ex R. Br. | | | Amphiestes S. Moore | Hypoestes Sol. ex R. Br. | Acanthaceae |
| Amphiscopia Nees | Justicia L. | | | Amphiscopia Nees | Justicia L. | Acanthaceae |
| Ancalanthus Balf. f., orth. var. | Angkalanthus Balf. f. | | | Ancalanthus Balf. f., orth. var. | Angkalanthus Balf. f. | Acanthaceae |
| Ancistranthus Lindau | | a | | Ancistranthus Lindau | | Acanthaceae |
| Ancylacanthus Lindau | Ptyssiglottis T. Anderson | | | Ancylacanthus Lindau | Ptyssiglottis T. Anderson | Acanthaceae |
| Angkalanthus Balf. f. | | a | | Angkalanthus Balf. f. | | Acanthaceae |
| Anisacanthus Nees | | a | | Anisacanthus Nees | | Acanthaceae |
| Anisostachya Nees | Justicia L. | | | Anisostachya Nees | Justicia L. | Acanthaceae |
| Anisotes Nees | | a | | Anisotes Nees | | Acanthaceae |
| Anthacanthus Nees | Oplonia Raf. | | | Anthacanthus Nees | Oplonia Raf. | Acanthaceae |
| Antheliacanthus Ridl. | Pseuderanthemum Radlk. | | | Antheliacanthus Ridl. | Pseuderanthemum Radlk. | Acanthaceae |
| Aphanosperma T. F. Daniel | | a | | Aphanosperma T. F. Daniel | | Acanthaceae |
| Ascotheca Heine | | a | | Ascotheca Heine | | Acanthaceae |
| Asystasia Blume | | a | | Asystasia Blume | | Acanthaceae |
| Asystasiella Lindau | Asystasia Blume | | | Asystasiella Lindau | Asystasia Blume | Acanthaceae |
| Aulojusticia Lindau | Justicia L. | | | Aulojusticia Lindau | Justicia L. | Acanthaceae |
| Averia Leonard | Tetramerium Nees | | | Averia Leonard | Tetramerium Nees | Acanthaceae |
| Ballochia Balf. f. | | a | | Ballochia Balf. f. | | Acanthaceae |
| Beloperone Nees | Justicia L. | | | Beloperone Nees | Justicia L. | Acanthaceae |
| Bentia Rolfe | Justicia L. | | | Bentia Rolfe | Justicia L. | Acanthaceae |
| Brachystephanus Nees | | a | | Brachystephanus Nees | | Acanthaceae |
| Brochosiphon Nees | Dicliptera Juss. | | | Brochosiphon Nees | Dicliptera Juss. | Acanthaceae |
| Buceragenia Greenm. | Pseuderanthemum Radlk. | | | Buceragenia Greenm. | Pseuderanthemum Radlk. | Acanthaceae |
| Calliaspidia Bremek. | Justicia L. | | | Calliaspidia Bremek. | Justicia L. | Acanthaceae |
| Calophanoides (C. B. Clarke) Ridl. | Justicia L. | | | Calophanoides (C. B. Clarke) Ridl. | Justicia L. | Acanthaceae |
| Calycacanthus K. Schum. | | a | | Calycacanthus K. Schum. | | Acanthaceae |
| Calymmostachya Bremek. | Justicia L. | | | Calymmostachya Bremek. | Justicia L. | Acanthaceae |
| Cardiacanthus Nees & S. Schauer | Carlowrightia A. Gray | | | Cardiacanthus Nees & S. Schauer | Carlowrightia A. Gray | Acanthaceae |
| Carlowrightia A. Gray | | a | | Carlowrightia A. Gray | | Acanthaceae |
| Celerina Benoist | | a | | Celerina Benoist | | Acanthaceae |
| Centrilla Lindau | Justicia L. | | | Centrilla Lindau | Justicia L. | Acanthaceae |
| Cephalacanthus Lindau | | a | | Cephalacanthus Lindau | | Acanthaceae |
| Chaetochlamys Lindau | Justicia L. | | | Chaetochlamys Lindau | Justicia L. | Acanthaceae |
| Chaetothylax Nees | Justicia L. | | | Chaetothylax Nees | Justicia L. | Acanthaceae |
| Chaetothylopsis Oerst. | Justicia L. | | | Chaetothylopsis Oerst. | Justicia L. | Acanthaceae |
| Chalarothyrsus Lindau | | a | | Chalarothyrsus Lindau | | Acanthaceae |
| Chamaeranthemum Nees | | a | | Chamaeranthemum Nees | | Acanthaceae |
| Chameranthemum Nees, orth. var. | Chamaeranthemum Nees | | | Chameranthemum Nees, orth. var. | Chamaeranthemum Nees | Acanthaceae |
| Champluviera I. Darbysh. et al. | | a | | Champluviera I. Darbysh. et al. | | Acanthaceae |
| Chileranthemum Oerst. | | a | | Chileranthemum Oerst. | | Acanthaceae |
| Chiloglossa Oerst. | Justicia L. | | | Chiloglossa Oerst. | Justicia L. | Acanthaceae |
| Chingiacanthus Hand.-Mazz. | Isoglossa Oerst. | | | Chingiacanthus Hand.-Mazz. | Isoglossa Oerst. | Acanthaceae |
| Chlamydocardia Lindau | | a | | Chlamydocardia Lindau | | Acanthaceae |
| Chlamydostachya Mildbr. | | a | | Chlamydostachya Mildbr. | | Acanthaceae |
| Chorisochora Vollesen | | a | | Chorisochora Vollesen | | Acanthaceae |
| Chrestienia Montrouz., nom. inval. | Pseuderanthemum Radlk. | | | Chrestienia Montrouz., nom. inval. | Pseuderanthemum Radlk. | Acanthaceae |
| Clinacanthus Nees | | a | | Clinacanthus Nees | | Acanthaceae |
| Clistax Mart. | | a | | Clistax Mart. | | Acanthaceae |
| Codonacanthus Nees | | a | | Codonacanthus Nees | | Acanthaceae |
| Conocalyx Benoist | | a | | Conocalyx Benoist | | Acanthaceae |
| Corymbostachys Lindau | Justicia L. | | | Corymbostachys Lindau | Justicia L. | Acanthaceae |
| Cosmianthemum Bremek. | | a | | Cosmianthemum Bremek. | | Acanthaceae |
| Croftia Small | Carlowrightia A. Gray | | | Croftia Small | Carlowrightia A. Gray | Acanthaceae |
| Cyclacanthus S. Moore | | a | | Cyclacanthus S. Moore | | Acanthaceae |
| Cylindrosolenium Lindau | Stenostephanus Nees | | | Cylindrosolenium Lindau | Stenostephanus Nees | Acanthaceae |
| Cyphisia Rizzini | Justicia L. | | | Cyphisia Rizzini | Justicia L. | Acanthaceae |
| Cyrtanthera Nees | Justicia L. | | | Cyrtanthera Nees | Justicia L. | Acanthaceae |
| Cyrtantherella Oerst. | Justicia L. | | | Cyrtantherella Oerst. | Justicia L. | Acanthaceae |
| Dactylostegium Nees | Dicliptera Juss. | | | Dactylostegium Nees | Dicliptera Juss. | Acanthaceae |
| Danguya Benoist | | a | | Danguya Benoist | | Acanthaceae |
| Dasytropis Urb. | | a | | Dasytropis Urb. | | Acanthaceae |
| Delphinacanthus Benoist | Pseudodicliptera Benoist | | | Delphinacanthus Benoist | Pseudodicliptera Benoist | Acanthaceae |
| Dianthera L. | Justicia L. | | | Dianthera L. | Justicia L. | Acanthaceae |
| Diateinacanthus Lindau | Odontonema Nees | | | Diateinacanthus Lindau | Odontonema Nees | Acanthaceae |
| Dicentranthera T. Anderson | Asystasia Blume | | | Dicentranthera T. Anderson | Asystasia Blume | Acanthaceae |
| Dichazothece Lindau | | a | | Dichazothece Lindau | | Acanthaceae |
| Dicladanthera F. Muell. | | a | | Dicladanthera F. Muell. | | Acanthaceae |
| Dicliptera Juss. | | a | | Dicliptera Juss. | | Acanthaceae |
| Dimanisa Raf. | Justicia L. | | | Dimanisa Raf. | Justicia L. | Acanthaceae |
| Drejera Nees | Thyrsacanthus Moric. | | | Drejera Nees | Thyrsacanthus Moric. | Acanthaceae |
| Drejerella Lindau | Justicia L. | | | Drejerella Lindau | Justicia L. | Acanthaceae |
| Duvernoia E. Mey. ex Nees | Justicia L. | | | Duvernoia E. Mey. ex Nees | Justicia L. | Acanthaceae |
| Dyspemptemorion Bremek. | Justicia L. | | | Dyspemptemorion Bremek. | Justicia L. | Acanthaceae |
| Earlia F. Muell. | Graptophyllum Nees | | | Earlia F. Muell. | Graptophyllum Nees | Acanthaceae |
| Ecbolium Kurz | | a | | Ecbolium Kurz | | Acanthaceae |
| Ecteinanthus T. Anderson | Isoglossa Oerst. | | | Ecteinanthus T. Anderson | Isoglossa Oerst. | Acanthaceae |
| Emularia Raf. | Justicia L. | | | Emularia Raf. | Justicia L. | Acanthaceae |
| Ethesia Raf. | Justicia L. | | | Ethesia Raf. | Justicia L. | Acanthaceae |
| Filetia Miq. | | a | | Filetia Miq. | | Acanthaceae |
| Fittonia Coem. | | a | | Fittonia Coem. | | Acanthaceae |
| Forsythiopsis Baker | Oplonia Raf. | | | Forsythiopsis Baker | Oplonia Raf. | Acanthaceae |
| Gastranthus Moritz ex Benth. & Hook. f. | Stenostephanus Nees | | | Gastranthus Moritz ex Benth. & Hook. f. | Stenostephanus Nees | Acanthaceae |
| Gatesia A. Gray | Yeatesia Small | | | Gatesia A. Gray | Yeatesia Small | Acanthaceae |
| Gendarussa Nees | Justicia L. | | | Gendarussa Nees | Justicia L. | Acanthaceae |
| Glockeria Nees | Stenostephanus Nees | | | Glockeria Nees | Stenostephanus Nees | Acanthaceae |
| Glosarithys Rizzini | Justicia L. | | | Glosarithys Rizzini | Justicia L. | Acanthaceae |
| Glossochilus Nees | | a | | Glossochilus Nees | | Acanthaceae |
| Graptophyllum Nees | | a | | Graptophyllum Nees | | Acanthaceae |
| Gypsacanthus E. J. Lott et al. | | a | | Gypsacanthus E. J. Lott et al. | | Acanthaceae |
| Habracanthus Nees | Stenostephanus Nees | | | Habracanthus Nees | Stenostephanus Nees | Acanthaceae |
| Hallieracantha Stapf | Ptyssiglottis T. Anderson | | | Hallieracantha Stapf | Ptyssiglottis T. Anderson | Acanthaceae |
| Hansteinia Oerst. | Stenostephanus Nees | | | Hansteinia Oerst. | Stenostephanus Nees | Acanthaceae |
| Haplanthera Hochst. | Ruttya Harv. | | | Haplanthera Hochst. | Ruttya Harv. | Acanthaceae |
| Harnieria Solms | Justicia L. | | | Harnieria Solms | Justicia L. | Acanthaceae |
| Harpochilus Nees | | a | | Harpochilus Nees | | Acanthaceae |
| Heinzelia Nees | Justicia L. | | | Heinzelia Nees | Justicia L. | Acanthaceae |
| Hemichoriste Nees | Justicia L. | | | Hemichoriste Nees | Justicia L. | Acanthaceae |
| Henrya Nees | | a | | Henrya Nees | | Acanthaceae |
| Herpetacanthus Nees | | a | | Herpetacanthus Nees | | Acanthaceae |
| Heteraspidia Rizzini | Justicia L. | | | Heteraspidia Rizzini | Justicia L. | Acanthaceae |
| Himantochilus T. Anderson ex Benth. | Anisotes Nees | | | Himantochilus T. Anderson ex Benth. | Anisotes Nees | Acanthaceae |
| Hoverdenia Nees | | a | | Hoverdenia Nees | | Acanthaceae |
| Hypoestes Sol. ex R. Br. | | a | | Hypoestes Sol. ex R. Br. | | Acanthaceae |
| Ichthyostoma Hedrén & Vollesen | | a | | Ichthyostoma Hedrén & Vollesen | | Acanthaceae |
| Isochoriste Miq. | Asystasia Blume | | | Isochoriste Miq. | Asystasia Blume | Acanthaceae |
| Isoglossa Oerst. | | a | | Isoglossa Oerst. | | Acanthaceae |
| Isotheca Turrill | | a | | Isotheca Turrill | | Acanthaceae |
| Ixtlania M. E. Jones | Justicia L. | | | Ixtlania M. E. Jones | Justicia L. | Acanthaceae |
| Jacobinia Nees ex Moric. | Justicia L. | | | Jacobinia Nees ex Moric. | Justicia L. | Acanthaceae |
| Jadunia Lindau | | a | | Jadunia Lindau | | Acanthaceae |
| Juruasia Lindau | | a | | Juruasia Lindau | | Acanthaceae |
| Justicia L. | | a | | Justicia L. | | Acanthaceae |
| Kalbreyeracanthus Wassh. | Stenostephanus Nees | | | Kalbreyeracanthus Wassh. | Stenostephanus Nees | Acanthaceae |
| Kalbreyeriella Lindau | | a | | Kalbreyeriella Lindau | | Acanthaceae |
| Kenyacanthus I. Darbysh. & Kiel | | a | | Kenyacanthus I. Darbysh. & Kiel | | Acanthaceae |
| Kolobochilus Lindau | Razisea Oerst. | | | Kolobochilus Lindau | Razisea Oerst. | Acanthaceae |
| Kudoacanthus Hosok. | | a | | Kudoacanthus Hosok. | | Acanthaceae |
| Kuestera Regel | Justicia L. | | | Kuestera Regel | Justicia L. | Acanthaceae |
| Leda C. B. Clarke | Isoglossa Oerst. | | | Leda C. B. Clarke | Isoglossa Oerst. | Acanthaceae |
| Leptostachya Nees | | a | | Leptostachya Nees | | Acanthaceae |
| Libonia K. Koch | Justicia L. | | | Libonia K. Koch | Justicia L. | Acanthaceae |
| Linariantha B. L. Burtt & R. M. Sm. | | a | | Linariantha B. L. Burtt & R. M. Sm. | | Acanthaceae |
| Linocalyx Lindau | Justicia L. | | | Linocalyx Lindau | Justicia L. | Acanthaceae |
| Lophothecium Rizzini | Justicia L. | | | Lophothecium Rizzini | Justicia L. | Acanthaceae |
| Lustrinia Raf. | Justicia L. | | | Lustrinia Raf. | Justicia L. | Acanthaceae |
| Mackaya Harv. | | a | | Mackaya Harv. | | Acanthaceae |
| Macrorungia C. B. Clarke | Anisotes Nees | | | Macrorungia C. B. Clarke | Anisotes Nees | Acanthaceae |
| Mananthes Bremek. | Justicia L. | | | Mananthes Bremek. | Justicia L. | Acanthaceae |
| Marcania J. B. Imlay | | a | | Marcania J. B. Imlay | | Acanthaceae |
| Megalochlamys Lindau | | a | | Megalochlamys Lindau | | Acanthaceae |
| Megalostoma Leonard | | a | | Megalostoma Leonard | | Acanthaceae |
| Megaskepasma Lindau | | a | | Megaskepasma Lindau | | Acanthaceae |
| Melittacanthus S. Moore | | a | | Melittacanthus S. Moore | | Acanthaceae |
| Metarungia Baden | | a | | Metarungia Baden | | Acanthaceae |
| Mexacanthus T. F. Daniel | | a | | Mexacanthus T. F. Daniel | | Acanthaceae |
| Mirandea Rzed. | | a | | Mirandea Rzed. | | Acanthaceae |
| Monechma Hochst. | | a | | Monechma Hochst. | | Acanthaceae |
| Monothecium Hochst. | | a | | Monothecium Hochst. | | Acanthaceae |
| Morsacanthus Rizzini | Pseuderanthemum Radlk. | | | Morsacanthus Rizzini | Pseuderanthemum Radlk. | Acanthaceae |
| Neohallia Hemsl. | Justicia L. | | | Neohallia Hemsl. | Justicia L. | Acanthaceae |
| Nicoteba Lindau | Justicia L. | | | Nicoteba Lindau | Justicia L. | Acanthaceae |
| Odontonema Nees | | a | | Odontonema Nees | | Acanthaceae |
| Odontonemella Lindau | Mackaya Harv. | | | Odontonemella Lindau | Mackaya Harv. | Acanthaceae |
| Oplonia Raf. | | a | | Oplonia Raf. | | Acanthaceae |
| Oreacanthus Benth. | Brachystephanus Nees | | | Oreacanthus Benth. | Brachystephanus Nees | Acanthaceae |
| Oreothyrsus Lindau | Ptyssiglottis T. Anderson | | | Oreothyrsus Lindau | Ptyssiglottis T. Anderson | Acanthaceae |
| Orthotactus Nees | Justicia L. | | | Orthotactus Nees | Justicia L. | Acanthaceae |
| Pachystachys Nees | | a | | Pachystachys Nees | | Acanthaceae |
| Parasystasia Baill. | Asystasia Blume | | | Parasystasia Baill. | Asystasia Blume | Acanthaceae |
| Pelecostemon Leonard | | a | | Pelecostemon Leonard | | Acanthaceae |
| Periestes Baill. | Hypoestes Sol. ex R. Br. | | | Periestes Baill. | Hypoestes Sol. ex R. Br. | Acanthaceae |
| Peristrophe Nees | | a | | Peristrophe Nees | | Acanthaceae |
| Petalanthera Raf. | Justicia L. | | | Petalanthera Raf. | Justicia L. | Acanthaceae |
| Phialacanthus Benth. | | a | | Phialacanthus Benth. | | Acanthaceae |
| Phidiasia Urb. | | a | | Phidiasia Urb. | | Acanthaceae |
| Plagiacanthus Nees | Justicia L. | | | Plagiacanthus Nees | Justicia L. | Acanthaceae |
| Plagiotheca Chiov. | Isoglossa Oerst. | | | Plagiotheca Chiov. | Isoglossa Oerst. | Acanthaceae |
| Plegmatolemma Bremek. | Justicia L. | | | Plegmatolemma Bremek. | Justicia L. | Acanthaceae |
| Podorungia Baill. | | a | | Podorungia Baill. | | Acanthaceae |
| Pogonospermum Hochst. | Monechma Hochst. | | | Pogonospermum Hochst. | Monechma Hochst. | Acanthaceae |
| Poikilacanthus Lindau | | a | | Poikilacanthus Lindau | | Acanthaceae |
| Polytrema C. B. Clarke | Ptyssiglottis T. Anderson | | | Polytrema C. B. Clarke | Ptyssiglottis T. Anderson | Acanthaceae |
| Populina Baill. | | a | | Populina Baill. | | Acanthaceae |
| Porphyrocoma Scheidw. ex Hook. | Justicia L. | | | Porphyrocoma Scheidw. ex Hook. | Justicia L. | Acanthaceae |
| Pranceacanthus Wassh. | | a | | Pranceacanthus Wassh. | | Acanthaceae |
| Psacadocalymma Bremek. | Justicia L. | | | Psacadocalymma Bremek. | Justicia L. | Acanthaceae |
| Pseuderanthemum Radlk. | | a | | Pseuderanthemum Radlk. | | Acanthaceae |
| Pseudodicliptera Benoist | | a | | Pseudodicliptera Benoist | | Acanthaceae |
| Psilanthele Lindau | | a | | Psilanthele Lindau | | Acanthaceae |
| Psiloesthes Benoist | Peristrophe Nees | | | Psiloesthes Benoist | Peristrophe Nees | Acanthaceae |
| Ptyssiglottis T. Anderson | | a | | Ptyssiglottis T. Anderson | | Acanthaceae |
| Pulchranthus V. M. Baum et al. | | a | | Pulchranthus V. M. Baum et al. | | Acanthaceae |
| Pupilla Rizzini | Justicia L. | | | Pupilla Rizzini | Justicia L. | Acanthaceae |
| Ramusia Nees | Peristrophe Nees | | | Ramusia Nees | Peristrophe Nees | Acanthaceae |
| Razisea Oerst. | | a | | Razisea Oerst. | | Acanthaceae |
| Rhacodiscus Lindau | Justicia L. | | | Rhacodiscus Lindau | Justicia L. | Acanthaceae |
| Rhaphidospora Nees | Justicia L. | | | Rhaphidospora Nees | Justicia L. | Acanthaceae |
| Rhinacanthus Nees | | a | | Rhinacanthus Nees | | Acanthaceae |
| Rhiphidosperma G. Don, orth. var. | Justicia L. | | | Rhiphidosperma G. Don, orth. var. | Justicia L. | Acanthaceae |
| Rhyticalymma Bremek. | Justicia L. | | | Rhyticalymma Bremek. | Justicia L. | Acanthaceae |
| Rhytiglossa Nees | Isoglossa Oerst. | | | Rhytiglossa Nees | Isoglossa Oerst. | Acanthaceae |
| Ritonia Benoist | | a | | Ritonia Benoist | | Acanthaceae |
| Rodatia Raf. | Justicia L. | | | Rodatia Raf. | Justicia L. | Acanthaceae |
| Rostellaria Nees | Justicia L. | | | Rostellaria Nees | Justicia L. | Acanthaceae |
| Rostellularia Rchb. | Justicia L. | | | Rostellularia Rchb. | Justicia L. | Acanthaceae |
| Rungia Nees | | a | | Rungia Nees | | Acanthaceae |
| Ruspolia Lindau | | a | | Ruspolia Lindau | | Acanthaceae |
| Ruttya Harv. | | a | | Ruttya Harv. | | Acanthaceae |
| Saglorithys Rizzini | Justicia L. | | | Saglorithys Rizzini | Justicia L. | Acanthaceae |
| Salpinctium T. J. Edwards | | a | | Salpinctium T. J. Edwards | | Acanthaceae |
| Salviacanthus Lindau | Justicia L. | | | Salviacanthus Lindau | Justicia L. | Acanthaceae |
| Samuelssonia Urb. & Ekman | | a | | Samuelssonia Urb. & Ekman | | Acanthaceae |
| Sapphoa Urb. | | a | | Sapphoa Urb. | | Acanthaceae |
| Sarojusticia Bremek. | Justicia L. | | | Sarojusticia Bremek. | Justicia L. | Acanthaceae |
| Sarotheca Nees | Justicia L. | | | Sarotheca Nees | Justicia L. | Acanthaceae |
| Schaueria Nees | | a | | Schaueria Nees | | Acanthaceae |
| Schliebenia Mildbr. | Isoglossa Oerst. | | | Schliebenia Mildbr. | Isoglossa Oerst. | Acanthaceae |
| Schwabea Endl. & Fenzl | Monechma Hochst. | | | Schwabea Endl. & Fenzl | Monechma Hochst. | Acanthaceae |
| Sciaphyllum Bremek. | Streblacanthus Kuntze | | | Sciaphyllum Bremek. | Streblacanthus Kuntze | Acanthaceae |
| Sebastiano-schaueria Nees | | a | | Sebastiano-schaueria Nees | | Acanthaceae |
| Sericographis Nees | Justicia L. | | | Sericographis Nees | Justicia L. | Acanthaceae |
| Simonisia Nees | Justicia L. | | | Simonisia Nees | Justicia L. | Acanthaceae |
| Siphoneranthemum (Oerst.) Kuntze | Pseuderanthemum Radlk. | | | Siphoneranthemum (Oerst.) Kuntze | Pseuderanthemum Radlk. | Acanthaceae |
| Siphonoglossa Oerst. | Justicia L. | | | Siphonoglossa Oerst. | Justicia L. | Acanthaceae |
| Solenochasma Fenzl | Justicia L. | | | Solenochasma Fenzl | Justicia L. | Acanthaceae |
| Solenoruellia Baill. | Henrya Nees | | | Solenoruellia Baill. | Henrya Nees | Acanthaceae |
| Spathacanthus Baill. | | a | | Spathacanthus Baill. | | Acanthaceae |
| Sphacanthus Benoist | | a | | Sphacanthus Benoist | | Acanthaceae |
| Sphinctacanthus Benth. | | a | | Sphinctacanthus Benth. | | Acanthaceae |
| Standleyacanthus Leonard | Herpetacanthus Nees | | | Standleyacanthus Leonard | Herpetacanthus Nees | Acanthaceae |
| Stenostephanus Nees | | a | | Stenostephanus Nees | | Acanthaceae |
| Stethoma Raf. | Justicia L. | | | Stethoma Raf. | Justicia L. | Acanthaceae |
| Streblacanthus Kuntze | | a | | Streblacanthus Kuntze | | Acanthaceae |
| Strophacanthus Lindau | Isoglossa Oerst. | | | Strophacanthus Lindau | Isoglossa Oerst. | Acanthaceae |
| Styasasia S. Moore | Asystasia Blume | | | Styasasia S. Moore | Asystasia Blume | Acanthaceae |
| Symplectochilus Lindau | Anisotes Nees | | | Symplectochilus Lindau | Anisotes Nees | Acanthaceae |
| Syringidium Lindau | Stenostephanus Nees | | | Syringidium Lindau | Stenostephanus Nees | Acanthaceae |
| Tabascina Baill. | Justicia L. | | | Tabascina Baill. | Justicia L. | Acanthaceae |
| Talbotia S. Moore | Afrofittonia Lindau | | | Talbotia S. Moore | Afrofittonia Lindau | Acanthaceae |
| Tessmanniacanthus Mildbr. | | a | | Tessmanniacanthus Mildbr. | | Acanthaceae |
| Tetramerium Nees | | a | | Tetramerium Nees | | Acanthaceae |
| Thalestris Rizzini | Justicia L. | | | Thalestris Rizzini | Justicia L. | Acanthaceae |
| Thamnojusticia Mildbr. | Justicia L. | | | Thamnojusticia Mildbr. | Justicia L. | Acanthaceae |
| Thyrsacanthus Moric. | | a | | Thyrsacanthus Moric. | | Acanthaceae |
| Thyrsacanthus Nees | Odontonema Nees | | | Thyrsacanthus Nees | Odontonema Nees | Acanthaceae |
| Thysanostigma J. B. Imlay | | a | | Thysanostigma J. B. Imlay | | Acanthaceae |
| Trichaulax Vollesen | | a | | Trichaulax Vollesen | | Acanthaceae |
| Trichocalyx Balf. f. | | a | | Trichocalyx Balf. f. | | Acanthaceae |
| Trybliocalyx Lindau | Chileranthemum Oerst. | | | Trybliocalyx Lindau | Chileranthemum Oerst. | Acanthaceae |
| Tyloglossa Hochst. | Justicia L. | | | Tyloglossa Hochst. | Justicia L. | Acanthaceae |
| Vavara Benoist | | a | | Vavara Benoist | | Acanthaceae |
| Warpuria Stapf | Podorungia Baill. | | | Warpuria Stapf | Podorungia Baill. | Acanthaceae |
| Xerothamnella C. T. White | | a | | Xerothamnella C. T. White | | Acanthaceae |
| Yeatesia Small | | a | | Yeatesia Small | | Acanthaceae |