''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'' (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'' (Poir) C. Jeffrey − butterweed ** ''Senecio glabellus'' Poir. * '' Packera greenei'' (Gray) W.A. Weber & A. Löve − flame ragwort * '' Packera hartiana'' (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'' (Rydb.) W.A. Weber & A. Löve − Uinta ragwort * '' Packera moresbiensis'' (Calder & Roy L. Taylor) J.F. Bain – Cleftleaf ragwort * '' Packera multilobata'' (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'' (DC.) D.K. Trock & T.M. Barkley – Buek's groundsel * '' Packera tampicana'' (DC.) C. Jeffrey − Great Plains ragwort * '' Packera tomentosa'' (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