Antennaria breitungii A.E.Porsild accepted as Antennaria rosea subsp. confinis (Greene) R.J.Bayer (original description)
Antennaria elegans A.E.Porsild accepted as Antennaria rosea subsp. confinis (Greene) R.J.Bayer (original description)
Antennaria incarnata A.E.Porsild accepted as Antennaria rosea subsp. confinis (Greene) R.J.Bayer (original description)
Antennaria pedunculata A.E.Porsild (original description)
Antennaria pulcherrima var. angustisquama A.E.Porsild accepted as Antennaria pulcherrima (Hook.) Greene (original description)
Antennaria stolonifera A.E.Porsild (original description)
Aster elegantulus A.E.Porsild accepted as Symphyotrichum falcatum var. falcatum (Lindl.) G.L.Nesom (original description)
Senecio sheldonensis A.E.Porsild (original description)
Senecio yukonensis A.E.Porsild accepted as Tephroseris yukonensis (A.E.Porsild) Holub (original description)
Taraxacum pellianum A.E.Porsild (original description)