The photo at right shows a close-up of the flowerhead of alpine meadow groundsel.

1. Harford's Ragwort: Packera bolanderi var. harfordii (Senecio bolanderi var. harfordii) -

2. Alpine Meadow Butterweed, Alpine Meadow Groundsel, Buek's Groundsel, Cleftleaf Groundsel, Pale Groundsel: Packera subnuda var. subnuda (Synonyms: Packera buekii, Senecio cymbalarioides, Senecio cymbalarioides var. cymbalarioides, Senecio subnudus) -

3. Streambank Butterweed: Packera pseudaurea var. pseudaurea (Senecio pseudaureus var. pseudaureus) -

4. Alpine Meadow Butterweed, Alpine Meadow Groundsel, Cleftleaf Groundsel, Rocky Mountain Butterweed, Rocky Mountain Groundsel: Packera streptanthifolia (Synonyms: Packera cymbalarioides (nom. illeg.), Senecio cymbalarioides, Packera oodes, Packera streptanthifolia var. rubricaulis, Packera streptanthifolia var. streptanthifolia, Senecio acutidens, Senecio adamsii, Senecio aureus var. borealis, Senecio cymbalarioides (nom. illeg.), Senecio cymbalarioides var. borealis, Senecio cymbalarioides var. cymbalarioides, Senecio cymbalarioides var. suksdorfii, Senecio fulgens, Senecio jonesii, Senecio laetiflorus, Senecio leonardii, Senecio longipetiolatus, Senecio oodes, Senecio pammelii, Senecio platylobus, Senecio rubricaulis, Senecio streptanthifolia var. streptanthifolia, Senecio streptanthifolius, Senecio streptanthifolius var. borealis, Senecio streptanthifolius var. kluanei, Senecio streptanthifolius var. laetiflorus, Senecio streptanthifolius var. oodes, Senecio streptanthifolius var. rubricaulis, Senecio streptanthifolius var. wallowensis, Senecio subcuneatus, Senecio suksdorfii, Senecio wardii) -

5. Sweet-marsh Butterweed: Senecio foetidus var. foetidus (Senecio hydrophiloides?) -

6. Tall Western Groundsel: Senecio integerrimus var. exaltatus -

7. White Western Groundsel: Senecio integerrimus var. ochroleucus -

8. Tansy Ragweed: Senecio jacobaea -

9. Arrowleaf Groundsel: Senecio triangularis -

10. Common Butterweed: Senecio vulgaris - Flowers all discoid, ray flowers lacking. Involucral bracts tipped with black spots. Leaves pinnatifid. Small, weedy annual or winter annual.