Antennaria alpina var. compacta (Malte) S.L.Welsh (original description)
Antennaria alpina var. megacephala (Fernald ex Raup) S.L.Welsh (original description)
Antennaria alpina var. stolonifera (A.E.Porsild) S.L.Welsh (original description)
Arnica alpina var. lonchophylla (Greene) S.L.Welsh accepted as Arnica lonchophylla Greene (original description)
Arnica amplexicaulis var. prima (Maguire) S.L.Welsh accepted as Arnica lanceolata subsp. prima (Maguire) Strother & S.J.Wolf (original description)
Arnica louiseana var. frigida (C.A.Mey. ex Iljin) S.L.Welsh accepted as Arnica griscomii subsp. frigida (C.A.Mey. ex Iljin) S.J.Wolf (original description)
Artemisia campestris var. strutzae S.L.Welsh (original description)
Artemisia frigida var. williamsiae S.L.Welsh accepted as Artemisia frigida Willd. (original description)
Saussurea angustifolia var. viscida (Hultén) S.L.Welsh (original description)