The genera Brickelliastrum (United States and Mexico), Asanthus (United States and Mexico), Dyscritogyne (Mexico), and Steviopsis have been separated from Brickellia by many 20th century authors (and all four combined into Steviopsis by some).
Their correct placement is still debated, but molecular phylogenetic analysis has provided evidence that Brickelliastrum, Asanthus, and Steviopsis (including Dyscritogyne, which is not distinct from Steviopsis) represent distinct lineages, and should be recognized as separate from Brickellia, while [Kuhnia], [Barroetea] and [Phanerostylis] should be treated as synonyms.

Species
Brickellia adenolepis
Brickellia ambigens
Brickellia amplexicaulis – earleaf brickellbush
Brickellia aramberrana
Brickellia arguta – pungent brickellbush
Brickellia argyrolepis
Brickellia atractyloides – spearleaf brickellbush, hollyleaf brickellbush
Brickellia baccharidea – resinleaf brickellbush, baccharisleaf brickellbush
Brickellia betonicifolia – betonyleaf brickellbush
Brickellia botterii
Brickellia brachyphylla – plumed brickellbush
Brickellia brandegei
Brickellia californica – California brickellbush, Jepson's brickellbush
Brickellia cardiophylla
Brickellia cavanillesii
Brickellia chenopodina
Brickellia chlorolepis
Brickellia coixtlahuaca
Brickellia conduplicata
Brickellia cordifolia – Flyr's nemesis
Brickellia corymbosa
Brickellia coulteri
Brickellia cuspidata
Brickellia cylindracea – gravelbar brickellbush
Brickellia dentata – leafy brickellbush
Brickellia desertorum
Brickellia diffusa
Brickellia eupatorioides – false boneset
Brickellia extranea
Brickellia filipes
Brickellia floribunda – Chihuahuan brickellbush
Brickellia frutescens – shrubby brickellbush, rigid brickellbush
Brickellia gentryi
Brickellia glabrata
Brickellia glandulosa
Brickellia glomerata
Brickellia glutinosa
Brickellia grandiflora – tassel-flowered brickellbush, mountain brickellbush
Brickellia greenei
Brickellia hastata
Brickellia hebecarpa
Brickellia hinckleyi
Brickellia huahuapana
Brickellia hymenochlaena
Brickellia incana – woolly brickellbush, white brickellbush
Brickellia jaliscensis
Brickellia jimenezii
Brickellia kellermanii
Brickellia knappiana
Brickellia laccata
Brickellia laciniata – splitleaf brickellbush
Brickellia lanata
Brickellia lancifolia
Brickellia laxiflora
Brickellia lemmonii
Brickellia leonensis
Brickellia leptophylla
Brickellia lewisii
Brickellia longifolia
Brickellia macromera
Brickellia magnifica
Brickellia mcdonaldii
Brickellia megaphylla
Brickellia microphylla
Brickellia monocephala
Brickellia mosieri
Brickellia multiflora
Brickellia nelsonii
Brickellia nevinii
Brickellia nutanticeps
Brickellia oblongifolia – Mojave brickellbush, narrow-leaved brickellbush
Brickellia odontophylla
Brickellia oligadena
Brickellia oliganthes
Brickellia oreithales
Brickellia orizabaensis
Brickellia palmeri
Brickellia paniculata
Brickellia parryi
Brickellia parvula – Mt. Davis brickellbush, small brickellbush
Brickellia paucidentata
Brickellia pavonii
Brickellia pendula
Brickellia peninsularis
Brickellia pringlei
Brickellia problematica
Brickellia reticulata
Brickellia rhomboidea
Brickellia robinsoniana
Brickellia rusbyi – stinking brickellbush
Brickellia scabra
Brickellia schaffneri
Brickellia scoparia
Brickellia secundiflora
Brickellia seemannii
Brickellia simplex – Sonoran brickellbush
Brickellia sonorana
Brickellia spinulosa
Brickellia stolonifera
Brickellia subsessilis
Brickellia subuligera
Brickellia tomentella
Brickellia urolepis
Brickellia venosa
Brickellia verbenacea
Brickellia vernicosa
Brickellia veronicifolia
Brickellia viejensis
Brickellia villarealii
Brickellia vollmeri
Brickellia watsonii
Brickellia wendtii
Brickellia wislizeni
Brickellia worthingtonii
The genera Brickelliastrum (United States and Mexico), Asanthus (United States and Mexico), Dyscritogyne (Mexico), and Steviopsis have been separated from Brickellia by many 20th century authors (and all four combined into Steviopsis by some). Their correct placement is still debated, but molecular phylogenetic analysis has provided evidence that Brickelliastrum, Asanthus, and Steviopsis (including Dyscritogyne, which is not distinct from Steviopsis) represent distinct lineages, and should be recognized as separate from Brickellia, while [Kuhnia], [Barroetea] and [Phanerostylis] should be treated as synonyms.
Species
Brickellia adenolepis
Brickellia ambigens
Brickellia amplexicaulis – earleaf brickellbush
Brickellia aramberrana
Brickellia arguta – pungent brickellbush
Brickellia argyrolepis
Brickellia atractyloides – spearleaf brickellbush, hollyleaf brickellbush
Brickellia baccharidea – resinleaf brickellbush, baccharisleaf brickellbush
Brickellia betonicifolia – betonyleaf brickellbush
Brickellia botterii
Brickellia brachyphylla – plumed brickellbush
Brickellia brandegei
Brickellia californica – California brickellbush, Jepson's brickellbush
Brickellia cardiophylla
Brickellia cavanillesii
Brickellia chenopodina
Brickellia chlorolepis
Brickellia coixtlahuaca
Brickellia conduplicata
Brickellia cordifolia – Flyr's nemesis
Brickellia corymbosa
Brickellia coulteri
Brickellia cuspidata
Brickellia cylindracea – gravelbar brickellbush
Brickellia dentata – leafy brickellbush
Brickellia desertorum
Brickellia diffusa
Brickellia eupatorioides – false boneset
Brickellia extranea
Brickellia filipes
Brickellia floribunda – Chihuahuan brickellbush
Brickellia frutescens – shrubby brickellbush, rigid brickellbush
Brickellia gentryi
Brickellia glabrata
Brickellia glandulosa
Brickellia glomerata
Brickellia glutinosa
Brickellia grandiflora – tassel-flowered brickellbush, mountain brickellbush
Brickellia greenei
Brickellia hastata
Brickellia hebecarpa
Brickellia hinckleyi
Brickellia huahuapana
Brickellia hymenochlaena
Brickellia incana – woolly brickellbush, white brickellbush
Brickellia jaliscensis
Brickellia jimenezii
Brickellia kellermanii
Brickellia knappiana
Brickellia laccata
Brickellia laciniata – splitleaf brickellbush
Brickellia lanata
Brickellia lancifolia
Brickellia laxiflora
Brickellia lemmonii
Brickellia leonensis
Brickellia leptophylla
Brickellia lewisii
Brickellia longifolia
Brickellia macromera
Brickellia magnifica
Brickellia mcdonaldii
Brickellia megaphylla
Brickellia microphylla
Brickellia monocephala
Brickellia mosieri
Brickellia multiflora
Brickellia nelsonii
Brickellia nevinii
Brickellia nutanticeps
Brickellia oblongifolia – Mojave brickellbush, narrow-leaved brickellbush
Brickellia odontophylla
Brickellia oligadena
Brickellia oliganthes
Brickellia oreithales
Brickellia orizabaensis
Brickellia palmeri
Brickellia paniculata
Brickellia parryi
Brickellia parvula – Mt. Davis brickellbush, small brickellbush
Brickellia paucidentata
Brickellia pavonii
Brickellia pendula
Brickellia peninsularis
Brickellia pringlei
Brickellia problematica
Brickellia reticulata
Brickellia rhomboidea
Brickellia robinsoniana
Brickellia rusbyi – stinking brickellbush
Brickellia scabra
Brickellia schaffneri
Brickellia scoparia
Brickellia secundiflora
Brickellia seemannii
Brickellia simplex – Sonoran brickellbush
Brickellia sonorana
Brickellia spinulosa
Brickellia stolonifera
Brickellia subsessilis
Brickellia subuligera
Brickellia tomentella
Brickellia urolepis
Brickellia venosa
Brickellia verbenacea
Brickellia vernicosa
Brickellia veronicifolia
Brickellia viejensis
Brickellia villarealii
Brickellia vollmeri
Brickellia watsonii
Brickellia wendtii
Brickellia wislizeni
Brickellia worthingtonii
Brickellia