''Packera'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of about 64 species of plants in the daisy family,

Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...

. Most species are commonly called ragworts or grounsels. Its members were previously included in the genus ''

Senecio ''Senecio'' is a genus of flowering plants in the daisy family (Asteraceae) that includes ragworts and groundsels. Variously circumscribed taxonomically, the genus ''Senecio'' is one of the largest genera of flowering plants. Description Morp ...

'' (where they were called ''aureoid senecios'' by

Asa Gray Asa Gray (November 18, 1810 – January 30, 1888) is considered the most important American botanist of the 19th century. His ''Darwiniana'' was considered an important explanation of how religion and science were not necessarily mutually excl ...

), but were divided out based on chromosome numbers, a variety of morphological characters, and molecular phylogeny. Packera_hesperia_4676

Species

* '' Packera anonyma'' (Wood) W.A. Weber & A. Löve − Small's ragwort * '' Packera antennariifolia'' (Britt.) W.A. Weber & A. Löve − shalebarren ragwort * ''

Packera aurea ''Packera aurea'' (formerly ''Senecio aureus''), commonly known as golden ragwort or simply ragwort, is a perennial flower in the family Asteraceae. It is also known as golden groundsel, squaw weed, life root, golden ''Senecio'', uncum, uncum ro ...

'' ( L.) A.& D. Löve − golden ragwort ** ''Senecio aureus'' L. * '' Packera bernardina'' (Greene) W.A. Weber & A. Löve − San Bernardino ragwort * ''

Packera bolanderi ''Packera bolanderi'' is a species of flowering plant in the aster family known by the common names Bolander's ragwort and seacoast ragwort. It is native to the west coast of the United States from Washington to northern California, where it gro ...

'' (Gray) W.A. Weber & A. Löve − Bolander's ragwort * ''

Packera breweri ''Packera breweri'' is a species of flowering plant in the aster family known by the common name Brewer's ragwort. It is endemic to central California, where it occurs in the woodlands and grasslands of the Central Coast Ranges. They are more f ...

'' (Burtt-Davy) W.A. Weber & A. Löve − Brewer's ragwort ** ''Senecio breweri'' Burtt-Davy * '' Packera cana'' (Hook.) W.A. Weber & A. Löve − woolly groundsel * '' Packera cardamine'' (Greene) W.A. Weber & A. Löve − bittercress ragwort * '' Packera castoreus'' (Welsh) Kartesz, comb. nov. ined. − Beaver Mountain ragwort * ''

Packera clevelandii ''Packera clevelandii'' is an uncommon species of flowering plant in the aster family known by the common name Cleveland's ragwort. It is endemic to California, where it is known from only two small regions, a section of the North Coast Ranges a ...

'' (Greene) W.A. Weber & A. Löve − Cleveland's ragwort ** ''Senecio clevelandii'' Greene * '' Packera contermina'' (Greenm.) T.M. Barkl., comb. nov. ined. * '' Packera crocata'' (Rydb.) W.A. Weber & A. Löve − saffron ragwort * '' Packera cymbalaria'' (Pursh) W.A. Weber & A. Löve − dwarf arctic ragwort * '' Packera cymbalarioides'' (Buek) W.A. Weber & A. Löve − cleftleaf groundsel * '' Packera cynthioides'' (Greene) W.A. Weber & A. Löve − White Mountain ragwort ** ''Senecio cynthiodes'' Greene * '' Packera debilis'' (Nutt.) W.A. Weber & A. Löve − weak groundsel * '' Packera dimorphophylla'' (Greene) W.A. Weber & A. Löve − splitleaf groundsel * ''

Packera eurycephala ''Packera eurycephala'' is a species of flowering plant in the aster family known by the common name widehead groundsel. It is native to a section of the western United States encompassing southern Oregon, northern California, and northern Nevad ...

'' (Torr. & Gray ex Gray) W.A. Weber & A. Löve − widehead groundsel * '' Packera fendleri'' (Gray) W.A. Weber & A. Löve − Fendler's ragwort * '' Packera flettii'' (Wieg.) W.A. Weber & A. Löve − Flett's ragwort * ''

Packera franciscana ''Packera franciscana'' (syn. ''Senecio franciscanus'') is a rare species of flowering plant in the aster family known by the common name San Francisco Peaks groundsel, or San Francisco Peaks ragwort. It is endemic to Arizona in the United State ...

'' (Greene) W.A. Weber & A. Löve − San Francisco Peaks ragwort ** ''Senecio franciscanus'' Greene − San Francisco Peaks groundsel * '' Packera ganderi'' (T.M. Barkl. & Beauchamp) W.A. Weber & A. Löve − Gander's ragwort * ''

Packera glabella ''Packera glabella'' (formerly ''Senecio glabellus'') is one of several plants with the common name butterweed, this one has also been called cressleaf groundsel and yellowtop. It is native to central and southeastern North America. It is toxic ...

'' (Poir) C. Jeffrey − butterweed ** ''Senecio glabellus'' Poir. * ''

Packera greenei ''Packera greenei'' is a species of flowering plant in the aster family known by the common name flame ragwort. It is endemic to northern California, where it is known from the North Coast Ranges and southern Klamath Mountains. It is a reside ...

'' (Gray) W.A. Weber & A. Löve − flame ragwort * ''

Packera hartiana ''Packera'' is a genus of about 64 species of plants in the daisy family, Asteraceae. Most species are commonly called ragworts or grounsels. Its members were previously included in the genus ''Senecio'' (where they were called ''aureoid senecios ...

'' (Heller) W.A. Weber & A. Löve − Hart's ragwort * '' Packera hesperia'' (Greene) W.A. Weber & A. Löve − western ragwort * '' Packera hyperborealis'' (Greenm.) A.& D. Löve − northern groundsel * '' Packera indecora'' (Greene) A.& D. Löve − elegant groundsel *''Packera insulae-regalis'' R.R. Kowal − Isle Royale ragwort * ''

Packera ionophylla ''Packera ionophylla'' is an uncommon species of flowering plant in the Asteraceae, aster family known by the common name Tehachapi ragwort. It is Endemism, endemic to California, where it is known from the Tehachapi Mountains, the San Gabriel Mo ...

'' (Greene) W.A. Weber & A. Löve − Tehachapi ragwort * ''

Packera layneae ''Packera layneae'', known by the common name Layne's ragwort and Layne's butterweed, is a rare species of flowering plant in the aster family. Distribution The plant is endemic to California, where it is only known from the western slopes of ...

'' (Greene) W.A. Weber & A. Löve − Layne's ragwort * '' Packera macounii'' (Greene) W.A. Weber & A. Löve − Siskiyou Mountain ragwort * '' Packera malmstenii'' (Blake ex Tidestrom) Kartesz, comb. nov. ined. − Podunk ragwort * '' Packera millefolia'' (Torr. & Gray) T.M. Barkl., comb. nov. ined. − piedmont ragwort ** ''Packera millefolium'' (Torr. & A. Gray) W.A. Weber & A. Löve ** ''Senecio millefolium'' Torr. & Gray * ''

Packera millelobata ''Packera'' is a genus of about 64 species of plants in the daisy family, Asteraceae. Most species are commonly called ragworts or grounsels. Its members were previously included in the genus ''Senecio'' (where they were called ''aureoid senecios ...

'' (Rydb.) W.A. Weber & A. Löve − Uinta ragwort * '' Packera moresbiensis'' (Calder & Roy L. Taylor) J.F. Bain – Cleftleaf ragwort * ''

Packera multilobata ''Packera multilobata'' is a species of flowering plant in the aster family known by the common name lobeleaf groundsel. It is native to the western United States from California to Wyoming to New Mexico, where it is common and can be found in ...

'' (Torr. & Gray ex Gray) W.A. Weber & A. Löve − lobeleaf groundsel ** ''Senecio multilobatus'' Torr. & Gray ex Gray * '' Packera musiniensis'' (S. L. Welsh) Trock * '' Packera neomexicana'' (Gray) W.A. Weber & A. Löve − New Mexico groundsel * ''

Packera obovata ''Packera obovata'', commonly known as roundleaf ragwort, spoon-leaved ragwort, roundleaf groundsel, or squaw-weed, is an erect perennial herb in the Asteraceae (aster) family native to eastern North America. It was previously called ''Senecio ob ...

'' (Muhl. ex Willd.) W.A. Weber & A. Löve − roundleaf ragwort ** ''Senecio obovatus'' Muhl. ex Willd. * ''

Packera ogotorukensis ''Packera'' is a genus of about 64 species of plants in the daisy family, Asteraceae. Most species are commonly called ragworts or grounsels. Its members were previously included in the genus ''Senecio'' (where they were called ''aureoid senecios ...

'' (Packer) A.& D. Löve − Ogotoruk Creek ragwort * '' Packera pauciflora'' (Pursh) A.& D. Löve − alpine groundsel * '' Packera paupercula'' (Michx.) A.& D. Löve − balsam groundsel * '' Packera plattensis'' (Nutt.) W.A. Weber & A. Löve − prairie groundsel ** ''Senecio plattensis'' Nutt. * ''

Packera porteri ''Packera'' is a genus of about 64 species of plants in the daisy family, Asteraceae. Most species are commonly called ragworts or grounsels. Its members were previously included in the genus ''Senecio'' (where they were called ''aureoid senecios ...

'' (Greene) C. Jeffrey − Porter's groundsel * '' Packera pseudaurea'' (Rydb.) W.A. Weber & A. Löve − falsegold groundsel * '' Packera quaerens'' (Greene) W.A. Weber & A. Löve − Mogollon Mountain ragwort ** ''Senecio quaerens'' Greene * '' Packera quercetorum'' (Greene) C. Jeffrey − Oak Creek ragwort * '' Packera sanguisorboides'' (Rydb.) W.A. Weber & A. Löve − burnet ragwort * '' Packera schweinitziana'' (Nutt.) W.A. Weber & A. Löve − Schweinitz's ragwort ** ''Senecio schweinitzianus'' Nutt. * '' Packera serpenticola'' Boufford, Kartesz, S.H. Shi & Renchao Zhou − serpentine ragwort * '' Packera spellenbergii'' (T.M. Barkl.) C. Jeffrey − Carrizo Creek ragwort * '' Packera streptanthifolia'' (Greene) W.A. Weber & A. Löve − Rocky Mountain groundsel * ''

Packera subnuda ''Packera subnuda'' is a species of flowering plant in the aster family known by the common names Buek's groundsel and cleftleaf groundsel. It is native to western North America from the Northwest Territories to northern California to Wyoming, ...

'' (DC.) D.K. Trock & T.M. Barkley – Buek's groundsel * '' Packera tampicana'' (DC.) C. Jeffrey − Great Plains ragwort * ''

Packera tomentosa ''Packera dubia'', synonym ''Packera tomentosa'', is a species of flowering plant in the composite family. It is known by the common name woolly ragwort. It is native to the Southeastern United States The Southeastern United States, also ...

'' (Michx.) C. Jeffrey − woolly ragwort * ''

Packera tridenticulata ''Packera'' is a genus of about 64 species of plants in the daisy family, Asteraceae. Most species are commonly called ragworts or grounsels. Its members were previously included in the genus ''Senecio'' (where they were called ''aureoid senecios ...

'' (Rydb.) W.A. Weber & A. Löve − threetooth ragwort * '' Packera werneriifolia'' (Gray) W.A. Weber & A. Löve − hoary groundsel Sources: NRCS

References

Asteraceae genera {{Senecioneae-stub