Arnica chamissonis var. foliosa (Nutt.) Maguire accepted as Arnica chamissonis Less. (original description)
Arnica mollis var. mollis Maguire accepted as Arnica mollis Hook. (original description)
Arnica mollis var. silvatica (Greene) Maguire accepted as Arnica mollis Hook. (original description)
Haplopappus nuttallii var. depressus Maguire (original description)
Haplopappus nuttallii var. nuttallii Maguire (original description)
Hymenopappus nudipes Maguire accepted as Hymenopappus filifolius var. nudipes (Maguire) B.L.Turner (original description)
Hymenopappus nudipes var. alpestris Maguire (original description)
Hymenopappus nudipes var. nudipes Maguire accepted as Hymenopappus nudipes Maguire accepted as Hymenopappus filifolius var. nudipes (Maguire) B.L.Turner (original description)
Lygodesmia grandiflora var. grandiflora Maguire (original description)
Lygodesmia grandiflora var. stricta Maguire accepted as Lygodesmia grandiflora (Nutt.) Torr. & A.Gray (original description)