[HC, VPBC1]
Agrostis alba, ambiguous [HC]
Agrostis alba var. alba, ambiguous [HC]
Atriplex patula var. hastata, ambiguous [HC]
Aytonia erythrosperma
Brigantiaea
Caloplaca citrina [NALC]
Carex stygia, ambiguous
Crataegus oxyacantha var. paulii, suppressed name [HC]
Cuphophyllus
Diplophylleia albicans
Diplophylleia obtusifolium
Diplophylleia taxifolia
Epilobium alpinum, ambiguous [HC]
Erythranthe veronicifolia, unresolved
Festuca scabrella, ambiguous [HC]
Gleophyllum, orthorgraphic variant
Heleochloa, ambiguous [HC]
Heracleum sibiricum var. angustifolium, unresolved
Isoetes opaca, Invalid name
Kuhnia, ambiguous [HC]
Lecanora dispersa [NALC]
Malva rotundifolia, rejected name, ambiguous
Mertensia ciliata, misapplied ambiguous [HC2]
Solanum rubrum, unresolved
Tilachlidiaceae
Turbinellus [MycoBank]