Antennaria aprica var. minuscula (B.Boivin) B.Boivin accepted as Antennaria parvifolia Nutt. (original description)
Antennaria howellii f. concolor (Piper) B.Boivin accepted as Antennaria howellii subsp. petaloidea (Fernald) R.J.Bayer (original description)
Antennaria howellii var. athabascensis (Greene) B.Boivin accepted as Antennaria neglecta Greene (original description)
Antennaria howellii var. campestris (Rydb.) B.Boivin accepted as Antennaria neglecta Greene (original description)
Antennaria neodioica var. chlorantha (Greene) B.Boivin accepted as Antennaria rosea subsp. rosea Greene (original description)
Antennaria neodioica var. randii (Fernald) B.Boivin accepted as Antennaria howellii subsp. canadensis (Greene) R.J.Bayer (original description)
Antennaria russellii B.Boivin (original description)
Arnica mollis var. aspera (Greene) B.Boivin (original description)
Arnica mollis var. piperi (H.St.John) accepted as Arnica mollis Hook. (original description)
Artemisia campestris var. douglasiana (Besser ex Besser) B.Boivin accepted as Artemisia douglasiana Besser ex Besser (original description)
Aster hesperius f. albiflorus (Vict.) B.Boivin (original description)
Aster hesperius var. gaspensis (Vict.) B.Boivin accepted as Symphyotrichum anticostense (Fernald) G.L.Nesom (original description)
Aster subspicatus var. apricus (A.Gray) B.Boivin accepted as Symphyotrichum foliaceum var. apricum (A.Gray) G.L.Nesom (original description)
Bahianthus R.M.King & H.Rob. (original description)
Bahianthus viscosus (Spreng.) R.M.King & H.Rob. (original description)
Chrysanthemum arcticum var. polare (Hultén) B.Boivin accepted as Arctanthemum arcticum subsp. polare (Hultén) Tzvelev (original description)
Chrysanthemum leucanthemum var. boecheri B.Boivin accepted as Leucanthemum vulgare (Vaill.) Lam. (original description)
Cirsium hookerianum var. scariosum (Nutt.) B.Boivin accepted as Cirsium scariosum (Poir.) Nutt. (original description)
Conocliniopsis R.M.King & H.Rob. (original description)
Conocliniopsis prasiifolia (DC.) R.M.King & H.Rob. accepted as Eupatorium prasiifolium (DC.) Griseb. (original description)
Critonia dominicensis R.M.King & H.Rob. (original description)
Critonia platychaeta (Urb.) R.M.King & H.Rob. (original description)
Cronquistianthus R.M.King & H.Rob. (original description)
Cronquistianthus chotensis (Hieron.) R.M.King & H.Rob. (original description)
Cronquistianthus desmophyllus (B.L.Rob.) R.M.King & H.Rob. (original description)
Cronquistianthus glomeratus (DC.) R.M.King & H.Rob. (original description)
Cronquistianthus kalenbornianus (B.L.Rob.) R.M.King & H.Rob. (original description)
Cronquistianthus lavandulifolius (DC.) R.M.King & H.Rob. (original description)
Cronquistianthus leucophyllus (Kunth) R.M.King & H.Rob. (original description)
Cronquistianthus niveus (Kunth) R.M.King & H.Rob. (original description)
Cronquistianthus origanoides (Kunth) R.M.King & H.Rob. (original description)
Cronquistianthus pseudoriganoides (Hieron.) R.M.King & H.Rob. (original description)
Cronquistianthus rugosus (Kunth) R.M.King & H.Rob. accepted as Cronquistianthus bulliferus (S.F.Blake) R.M.King & H.Rob. (original description)
Cronquistianthus urubambensis (B.L.Rob.) R.M.King & H.Rob. (original description)
Cronquistianthus volkensii (Hieron.) R.M.King & H.Rob. (original description)
Diplostephium asplundii Cuatrec. (original description)
Diplostephium camargoanum Cuatrec. (original description)
Diplostephium ritterbushii Cuatrec. (original description)
Diplostephium sagasteguii Cuatrec. (original description)
Erigeron arthurii B.Boivin (original description)
Erigeron canadensis var. pusillus (Nutt.) B.Boivin accepted as Erigeron canadensis L. (original description)
Erigeron glabellus var. viscidus (Rydb.) B.Boivin accepted as Erigeron formosissimus var. viscidus (Rydb.) Cronquist (original description)
Erigeron purpuratus var. dilatatus B.Boivin accepted as Erigeron denalii A.Nelson (original description)
Erigeron scotteri B.Boivin accepted as Erigeron nivalis Nutt. (original description)
Erigeron uniflorus f. pallidus (Cronquist) B.Boivin accepted as Erigeron humilis Graham (original description)
Erigeron uniflorus var. eriocephalus (Vahl) B.Boivin (original description)
Espeletia garciae Cuatrec. (original description)
Espeletia jabonensis Cuatrec. (original description)
Espeletia ruizii Cuatrec. (original description)
Espeletia ulotricha Cuatrec. (original description)
Eupatorium purpureum f. faxonii (Fernald) B.Boivin accepted as Eupatorium quaternum DC. (new combination reference)
Eupatorium purpureum f. tegulosum (B.Boivin) B.Boivin accepted as Eupatorium quaternum DC. (new combination reference)
Fleischmannia cuatrecasasii R.M.King & H.Rob. (original description)
Grazielia anethifolia (DC.) R.M.King & H.Rob. accepted as Mikania anethifolia (DC.) Matzenb. (original description)
Grazielia coriacea (Scheele) R.M.King & H.Rob. accepted as Symphyopappus reticulatus Baker (original description)
Grazielia gaudichaudeana (DC.) R.M.King & H.Rob. (original description)
Grazielia intermedia (DC.) R.M.King & H.Rob. (original description)
Grazielia mollissima (Sch.Bip. ex Baker) R.M.King & H.Rob. (original description)
Grazielia multifida (DC.) R.M.King & H.Rob. (original description)
Grazielia nummularia (Hook. & Arn.) R.M.King & H.Rob. (original description)
Grazielia serrata (Spreng.) R.M.King & H.Rob. (original description)
Grindelia squarrosa var. integrifolia (Nutt.) B.Boivin accepted as Grindelia hirsutula Hook. & Arn. (original description)
Gyptidium R.M.King & H.Rob. (original description)
Gyptidium militare (B.L.Rob.) R.M.King & H.Rob. (original description)
Gyptidium trichobasis (Baker) R.M.King & H.Rob. (original description)
Haplopappus inuloides var. linearis (D.D.Keck) B.Boivin (original description)
Hatschbachiella R.M.King & H.Rob. (original description)
Helianthus nuttallii f. verticillatus B.Boivin (original description)
Heliopsis helianthoides var. fischeri B.Boivin (original description)
Lactuca tatarica f. stevensii (B.Boivin) (B.Boivin) (original description)
Neocabreria R.M.King & H.Rob. (original description)
Ratibida columnifera f. denudata (B.Boivin) B.Boivin (original description)
Solidago bernardii B.Boivin (original description)
Solidago lutescens (Lindl. ex DC.) B.Boivin (original description)