[Members of the Sunflower Family with Flower Heads Like Daisies in the Cascade Mts. of Oregon and Washington]

Butterweeds, Groundsels and Ragworts of the Cascade Mts. of Oregon and Washington

The Genus Senecio

Arrowleaf Groundsel, Arrowleaf Ragwort: Senecio triangularis var. triangularis

Arrowleaf Groundsel: Senecio triangularis var. triangularis

Rayless Groundsel, Rayless Ragwort: Senecio aronicoides - Discoid flower heads only. No ray flowers.

Elmer's Ragwort: Senecio elmeri -

Dwarf Mountain Ragwort, Dwarf Mountain Groundsel, Low Mt. Butterweed: Senecio fremontii var. fremontii -

Tall Groundsel, Sweet Marsh Butterweed, Stout Meadow Groundsel: Senecio hydrophiloides (Synonyms: Senecio foetidus, Senecio foetidus var. foetidus, Senecio foetidus var. hydrophiloides, Senecio oreganus) -

Alkali Marsh Butterweed, Alkali Marsh Ragwort, Great Swamp Groundsel, Water Groundsel, Water Ragwort: Senecio hydrophilus (Synonym: Senecio hydrophilus var. pacifica) -

White Western Groundsel, Tall Western Groundsel, Lambstongue Ragwort, Lamstongue Groundsel: Senecio integerrimus var. exaltatus (Synonyms: Senecio integerrimus var. vaseyi, Senecio vaseyi) -

Bigheaded Groundsel: Senecio integerrimus var. major -

Paleyellow Ragwort, Western Groundsel, White Western Groundsel: Senecio integerrimus var. ochroleucus (Synonyms: Senecio integerrimus ssp. ochroleucus, Senecio lugens var. ochroleuchus) -

Tansy Ragwort, Stinking Willie: Senecio jacobaea (Synonym: Jacobaea vulgaris) -

Black-tipped Groundsel: Senecio lugens (Synonym: Senecio integerrimus var. lugens) -

Wood Groundsel, Woodland Groundsel, Woodland Ragwort: Senecio sylvaticus -

Arrowleaf Groundsel, Arrowleaf Ragwort: Senecio triangularis var. triangularis (Synonyms: Senecio gibbonsii, Senecio triangularis, Senecio triangularis var. angustifolius) -

Sticky Ragwort: Senecio viscosus -

Old-man-in-the-Spring, Old Man in the Spring, Common Butterweed, Common Groundsel: Senecio vulgaris - Discoid heads only. No ray flowers.

Paul Slichter E-mail