| Scientific Name | Authority | Status |
|---|---|---|
| Acianthus | R.Br. | accepted |
| Acianthus exsertus | R.Br. | accepted |
| Acianthus scopulus | D.L.Jones | accepted |
| Acianthus cuneatus | D.L.Jones & L.M.Copel. | accepted |
| Acianthus sinclairii | Hook.f. | accepted |
| Acianthus caudatus | R.Br. | accepted |
| Acianthus saxatilis | D.L.Jones & M.A.Clem. | accepted |
| Acianthus ledwardii | Rupp | accepted |
| Acianthus fornicatus | R.Br. | accepted |
| Acianthus pusillus | D.L.Jones | accepted |
| Nemacianthus | D.L.Jones & M.A.Clem. | synonym |
| Acianthus fornicatus var. sinclairii | (Hook.f.) Hutch. | synonym |
| Nemacianthus caudatus | (R.Br.) D.L.Jones & M.A.Clem. | synonym |
| Acianthus caudatus var. pallidus | Rupp | synonym |
| Acianthus caudatus var. ater | Lindl. | synonym |
| Acianthus brunonis | F.Muell. | synonym |
| Acianthus borealis | D.L.Jones | synonym |
| Acianthus exiguus | D.L.Jones | synonym |
| Acianthus collinus | D.L.Jones | synonym |
| Acianthus apprimus | D.L.Jones | synonym |
| Acianthus bifolius | R.Br. | synonym |
| Acianthus rotundifolius | (Hook.f.) Schltr. | synonym |
| Acianthus oblonga | (Hook.f.) Schltr. | synonym |
| Acianthus reniformis var. oblonga | (Hook.f.) Rupp & Hatch | synonym |
| Acianthus reniformis | (R.Br.) Schltr. | synonym |
| Acianthus reniformis var. huegelii | (Endl.) A.S.George | synonym |
| Acianthus huegelii | (Endl.) Nicholls & Goadby | synonym |
| Acianthus tenuissimus | Nicholls & Goadby | synonym |
| Acianthus heptadactylus | Kraenzl. | synonym |
| Acianthus gibbsiae | Kores | synonym |
| Acianthus confusus | Guillaumin | synonym |
| Acianthus elegans | Rchb.f. | synonym |
| Acianthus tenellus | Schltr. | synonym |
| Acianthus grandiflorus | Schltr. | synonym |
| Acianthus halleanus | Kores | synonym |
| Acianthus variegatus | Kores | synonym |
| Acianthus bracteatus | Rendle | synonym |
| Acianthus vulcanicus | Schodde | synonym |
| Acianthus nanus | Rendle | synonym |
| Acianthus sphenochilus | (Kraenzl.) Kraenzl. | synonym |
| Acianthus cymbalariifolius | F.Muell. & Kraenzl. | synonym |
| Acianthus veillonis | N.Hallé | synonym |
| Acianthus culicifer | Rendle | synonym |
| Acianthus uvarius | N.Hallé | synonym |
| Acianthus tenuilabris | Schltr. | synonym |
| Acianthus amplexicaulis | (F.M.Bailey) Rolfe | synonym |
| Acianthus croftianus | Kores | synonym |
| Acianthus sublestus | Dockrill | synonym |
| Acianthus corniculatus | Rendle | synonym |
| Acianthus oxyglossus | Schltr. | synonym |
| Acianthus aegeridantennatus | N.Hallé | synonym |
| Acianthus macroglossus | Schltr. | synonym |
| Acianthus petiolatus | D.Don | synonym |
| Acianthus viridis | Hook.f. | synonym |
| Acianthus atepalus | Rchb.f. | synonym |
| Acianthus rivularis | A.Cunn. | synonym |
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