Baccharis berberidifolia Walp. accepted as Baccharis singularis (Vell.) G.M.Barroso (original description)
Brachyscome glauca Walp. accepted as Brachyscome aculeata (Labill.) Cass. ex Less. (original description)
Brachyscome strongylospermoides Walp. accepted as Brachyscome rigidula (DC.) G.L.Davis (original description)
Carlina elatior Wallr. accepted as Carlina acaulis subsp. caulescens (Lam.) Schübl. & G.Martens (original description)
Centaurea phaeocephala Wallr. (original description)
Chrysocephalum Walp. (original description)
Chrysocephalum helichrysoides Walp. accepted as Chrysocephalum apiculatum (Labill.) Steetz (original description)
Encelia tomentosa Walp. accepted as Encelia canescens Lam. (original description)
Eupatorium monardifolium Walp. accepted as Austroeupatorium silphiifolium (Mart.) R.M.King & H.Rob. (original description)
Eupatorium scaberrimum Walp. accepted as Chromolaena stachyophylla (Spreng.) R.M.King & H.Rob. (original description)
Eurybia cuneifolia Walp. (original description)
Gymnodiscus Less. (original description)
Gymnodiscus capillaris (L.f.) Less. (original description)
Harpalium mexicanum Walp. (original description)
Huenefeldia Walp. (original description)
Huenefeldia angustifolia Walp. (original description)
Huenefeldia coronopifolia Walp. (original description)
Hypochaeris contexta Wallr. accepted as Hypochaeris glabra L. (original description)
Lappa macrosperma Wallr. (original description)
Leontodon linkii Wallr. accepted as Scorzoneroides autumnalis (L.) Moench (original description)
Leptorhynchos gracilis Walp. (original description)
Leptorhynchos lhotskyanus Walp. (original description)
Montanoa clematidea Walp. accepted as Montanoa leucantha var. arborescens (DC.) B.L.Turner (original description)
Phyllopappus Walp. (original description)
Phyllopappus lanceolatus Walp. accepted as Microseris lanceolata (Walp.) Sch.Bip. (original description)
Pinaropappus scapiger Walp. accepted as Pinaropappus roseus (Less.) Less. (original description)
Scaliopsis Walp. (original description)
Scaliopsis lucaeana Walp. (original description)
Senecio apargiifolius Walp. (original description)
Senecio fluviatilis Wallr. accepted as Senecio sarracenicus L. (original description)
Senecio fontanus Wallr. (original description)
Solidago chrysantha Wallr. (original description)
Sonchus exaltatus Wallr. accepted as Sonchus arvensis L. (original description)
Sonchus oxyspermus Wallr. (original description)
Stevia lanceolata Walp. accepted as Stevia karwinskyana Steud. (original description)
Stevia linearifolia Walp. accepted as Stevia salicifolia Cav. (original description)
Stevia nitida Walp. accepted as Stevia lucida Lag. (original description)
Stevia origanifolia Walp. accepted as Stevia jorullensis Kunth (original description)
Thrincia leontodontoides Wallr. (original description)
Trichocline pedicularifolia Walp. accepted as Trichocline aurea (D.Don) Reiche (original description)
Vernonia chiliantha Walp. accepted as Lepidaploa myriocephala (DC.) H.Rob. (original description)
Vernonia cyanonioides Walp. (original description)
Vernonia daphnoides Walp. (original description)
Vernonia glomeruliflora Walp. accepted as Piptocarpha macropoda (DC.) Baker (original description)
Vernonia luschnathiana Walp. accepted as Piptocarpha lundiana (Less.) Baker (original description)
Vernonia subsessilis Walp. accepted as Lessingianthus durus (Mart. ex DC.) H.Rob. (original description)
Vernonia verbascoides Walp. (original description)