[Butterweeds and Groundsels: The Genus Packera West of the Cascade Mountains]

Siskiyou Butterweed, Serpentine Groundsel, Western Senecio

Packera hesperia

Synonym: Senecio hesperius

Siskiyou Butterweed, Serpentine Groundsel, Western Senecio: Packera hesperia ( Synonym: Senecio hesperius) - Siskiyou Butterweed, Serpentine Groundsel, Western Senecio: Packera hesperia ( Synonym: Senecio hesperius)

Siskiyou butterweed as found near the Days Gulch Botanical Area in the Siskiyou region of southwestern Oregon...........April 29, 2012.

Siskiyou Butterweed, Serpentine Groundsel, Western Senecio: Packera hesperia ( Synonym: Senecio hesperius) - Siskiyou Butterweed, Serpentine Groundsel, Western Senecio: Packera hesperia ( Synonym: Senecio hesperius)

Siskiyou butterweed as found along Eight Dollar Mountain Road near the green bridge across the Illinois River, Siskiyou region of Oregon..........April 29, 2012.

Basal leaves of Siskiyou Butterweed, Serpentine Groundsel, Western Senecio: Packera hesperia ( Synonym: Senecio hesperius) - Siskiyou Butterweed, Serpentine Groundsel, Western Senecio: Packera hesperia ( Synonym: Senecio hesperius)

Siskiyou butterweed as found near the Days Gulch Botanical Area in the Siskiyou region of southwestern Oregon...........April 29, 2012.

Paul Slichter