Eupatorium alternifolium var. burchellii Baker accepted as Gyptis crassipes (Hieron.) R.M.King & H.Rob. (original description)
Eupatorium alternifolium var. oppositifolium Baker accepted as Gyptis lanigera (Hook. & Arn.) R.M.King & H.Rob. (original description)
Eupatorium amygdalinum var. dissitiflorum Baker accepted as Ayapana amygdalina (Lam.) R.M.King & H.Rob. (original description)
Eupatorium amygdalinum var. elegans (Gardner) Baker accepted as Ayapana amygdalina (Lam.) R.M.King & H.Rob. (original description)
Eupatorium amygdalinum var. glandulosum (Gardner) Baker accepted as Ayapana amygdalina (Lam.) R.M.King & H.Rob. (original description)
Eupatorium amygdalinum var. oxychlaenum (DC.) Baker (original description)
Eupatorium asperrimum var. gardneri Baker accepted as Chromolaena asperrima (Sch.Bip. ex Baker) R.M.King & H.Rob. (original description)
Eupatorium bartsiifolium var. hexanthum (DC.) Baker (original description)
Eupatorium bartsiifolium var. trichophorum (DC.) Baker (original description)
Eupatorium betoniciforme var. villosum Sch.Bip. ex Baker (original description)
Eupatorium bupleurifolium var. asclepiadeum (DC.) Baker accepted as Campovassouria cruciata (Vell.) R.M.King & H.Rob. (original description)
Eupatorium bupleurifolium var. linifolium (DC.) Baker accepted as Campovassouria cruciata (Vell.) R.M.King & H.Rob. (original description)
Eupatorium candolleanum var. lancifolium Baker accepted as Barrosoa candolleana (Hook. & Arn.) R.M.King & H.Rob. (original description)
Eupatorium candolleanum var. paranense Baker accepted as Barrosoa candolleana (Hook. & Arn.) R.M.King & H.Rob. (original description)
Eupatorium consanguineum var. inaequale Baker accepted as Koanophyllon consanguineum (DC.) R.M.King & H.Rob. (original description)
Eupatorium conyzoides var. affine (Hook. & Arn.) Baker (original description)
Eupatorium conyzoides var. maximiliani Baker (original description)
Eupatorium conyzoides var. phyllocephalum Sch.Bip. ex Baker (original description)
Eupatorium dendroides var. xylophylloides (DC.) Baker accepted as Raulinoreitzia tremula (Hook. & Arn.) R.M.King & H.Rob. (original description)
Eupatorium guadalupense var. laxum (Gardner) Baker (original description)
Eupatorium halimifolium var. latifolium Baker accepted as Disynaphia halimifolia (DC.) R.M.King & H.Rob. (original description)
Eupatorium horminoides var. leucocephalum (Gardner) Baker accepted as Chromolaena leucocephala Gardner (original description)
Eupatorium intermedium var. glabrescens Baker accepted as Grazielia intermedia (DC.) R.M.King & H.Rob. (original description)
Eupatorium ivifolium var. asperum Baker accepted as Chromolaena ivifolia (L.) R.M.King & H.Rob. (original description)
Eupatorium ivifolium var. extrorsum Baker accepted as Chromolaena ivifolia (L.) R.M.King & H.Rob. (original description)
Eupatorium ivifolium var. laxiflorum Baker accepted as Chromolaena ivifolia (L.) R.M.King & H.Rob. (original description)
Eupatorium laevigatum var. microcephalum Baker (original description)
Eupatorium liatrideum var. venulosum Baker accepted as Chromolaena squarrulosa (Hook. & Arn.) R.M.King & H.Rob. (original description)
Eupatorium macrocephalum var. angustifolium Baker accepted as Campuloclinium macrocephalum (Less.) DC. (original description)
Eupatorium pedale var. dissitiflorum Baker accepted as Chromolaena pedalis (Sch.Bip. ex Baker) R.M.King & H.Rob. (original description)
Eupatorium serratum var. alpestre (Gardner) Baker accepted as Eupatorium alpestre Gardner accepted as Grazielia serrata (Spreng.) R.M.King & H.Rob. (original description)
Eupatorium serratum var. confertum (Gardner) Baker accepted as Grazielia serrata (Spreng.) R.M.King & H.Rob. (original description)
Eupatorium squalidum var. martiusii (DC.) Baker accepted as Chromolaena squalida (DC.) R.M.King & H.Rob. (original description)
Eupatorium squalidum var. subvelutinum (DC.) Baker accepted as Chromolaena squalida (DC.) R.M.King & H.Rob. (original description)
Eupatorium steviifolium var. erigeroides (DC.) Baker accepted as Hatschbachiella tweedieana (Hook. & Arn.) R.M.King & H.Rob. (original description)
Eupatorium steviifolium var. laetevirens (Hook. & Arn.) Baker accepted as Austroeupatorium laetevirens (Hook. & Arn.) R.M.King & H.Rob. (original description)
Eupatorium tozziifolium var. bracteatum (Hook. & Arn.) Baker (original description)
Eupatorium vauthierianum var. glabriusculum (DC.) Baker accepted as Heterocondylus alatus (Vell.) R.M.King & H.Rob. (original description)
Eupatorium vauthierianum var. ramosissimum (Gardner) Baker (original description)
Gnaphalium satureioides var. angustifolia Baker (original description)
Gnaphalium satureioides var. laxa (Hook. & Arn.) Baker (original description)
Gymnocoronis spilanthoides var. attenuata (DC.) Baker accepted as Gymnocoronis spilanthoides (D.Don ex Hook. & Arn.) DC. (original description)
Gymnocoronis spilanthoides var. subcordata (DC.) Baker accepted as Gymnocoronis spilanthoides (D.Don ex Hook. & Arn.) DC. (original description)
Haplostephium passerina var. subulatum (Gardner) Baker (original description)
Lychnophora brunioides var. affinis (Gardner) Baker (original description)
Mikania amara var. guaco (Bonpl.) Baker accepted as Mikania guaco Humb. & Bonpl. (original description)
Mikania banisteriae var. umbrosa Baker (original description)
Mikania cordifolia var. carnosula (DC.) Baker (original description)
Mikania cordifolia var. umbrosa Baker (original description)
Mikania hirsutissima var. martiana (Gardner) Baker accepted as Mikania hirsutissima DC. (original description)
Mikania lindbergii var. collina Baker (original description)
Mikania microdonta var. stylosa (Gardner) Baker (original description)
Mikania paniculata var. melastomatifolia Sch.Bip. ex Baker (original description)
Mikania psilostachya var. racemulosa (Benth.) Baker accepted as Mikania psilostachya DC. (original description)
Mikania psilostachya var. scabra (DC.) Baker accepted as Mikania psilostachya DC. (original description)
Piptocarpha axillaris var. minor Baker (original description)
Piptocarpha macropoda var. crassifolia Baker accepted as Piptocarpha macropoda (DC.) Baker (original description)
Piptocarpha macropoda var. glaziovii Baker (original description)
Stevia collina var. hyptifolia (Gardner) Baker (original description)
Stevia oxylaena var. villosa Sch.Bip. ex Baker (original description)
Stevia satureifolia var. congesta (Hook. & Arn.) Baker (original description)
Stevia satureifolia var. hirsuta (Hook. & Arn.) Baker (original description)
Stevia veronicae f. umbrosa Baker (original description)
Stevia veronicae var. gratioloides (Hook. & Arn.) Baker accepted as Stevia tenuis Hook. & Arn. (original description)
Stevia veronicae var. tenuis (Hook. & Arn.) Baker accepted as Stevia tenuis Hook. & Arn. (original description)
Symphipappus reticulatus var. itacalumiensis Sch.Bip. ex Baker (original description)
Symphyopappus decussatus var. pohlianus Baker (original description)
Trichogonia villosa var. multiflora (Gardner) Baker accepted as Trichogonia villosa (Spreng.) Sch.Bip. ex Baker (original description)
Vernonia ammophila var. vestita Baker (original description)
Vernonia brevifolia var. ericifolia (Hook. & Arn.) Baker accepted as Lessingianthus brevifolius (Less.) H.Rob. (original description)
Vernonia cognata var. lundiana Baker accepted as Lepidaploa persericea (H.Rob.) H.Rob. (original description)
Vernonia desertorum var. campestris (DC.) Baker accepted as Chrysolaena desertorum (Mart. ex DC.) Dematt. (original description)
Vernonia desertorum var. longipes Baker accepted as Chrysolaena desertorum (Mart. ex DC.) Dematt. (original description)
Vernonia dura var. firmula (Mart. ex DC.) Baker (original description)
Vernonia dura var. megacephala Baker (original description)
Vernonia ferruginea var. pedicellaris Baker (original description)
Vernonia ferruginea var. polycephala (DC.) Baker (original description)
Vernonia geminata var. glabrescens Sch.Bip. ex Baker (original description)
Vernonia lindbergii var. vestita Baker (original description)
Vernonia megapotamica var. penicillata (Sch.Bip.) Baker (original description)
Vernonia nitidula var. florida (Gardner) Baker accepted as Vernonanthura montevidensis (Spreng.) H.Rob. (original description)
Vernonia obovata var. chrysophylla (Gardner) Baker accepted as Chrysolaena herbacea (Vell.) H.Rob. (original description)
Vernonia petiolaris var. appendiculata Baker (original description)
Vernonia psilophylla var. megocephala Baker (original description)
Vernonia remotiflora var. tricholepis (DC.) Baker accepted as Lepidaploa remotiflora (Rich.) H.Rob. (original description)
Vernonia rubricaulis var. denudata Baker accepted as Lessingianthus rubricaulis (Humb. & Bonpl.) H.Rob. (original description)
Vernonia ruficoma var. neriifolia (Gardner) Baker (original description)
Vernonia scorpioides var. sororia (DC.) Baker accepted as Lepidaploa sororia (DC.) H.Rob. (original description)
Vernonia virens var. megacephala Baker accepted as Lepidaploa salzmannii (DC.) H.Rob. (original description)