Horned Dandelion: Taraxacum ceratophorum (Synonyms: Taraxacum eriophorum, Taraxacum officinale ssp. ceratophorum, Taraxacum paucisquamosum, Taraxacum sibiricum) - Native.
Red-seeded Dandelion: Taraxacum erythrospermum (Synonym: Taraxacum laevigatum, Tarxacum laevigatum var. erythrospermum, Taraxacum officinale var. erythrospermum, Taraxacum scanicum) - Introduced from Europe. Naturalized.
Common Dandelion: Taraxacum officinale (Synonym: Taraxacum officinale ssp. vulgare) - Introduced from Europe. Naturalized.