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Packera

Packera

Overview
Packera is a genus
Genus
In biology, a genus is a taxonomic unit used in the classification of living and fossil organisms. The term comes from Latin genus "descent, family, type, gender" , cognate with – genos, "race, stock, kin" ..In addition, genus is a taxonomic rank in the hierarchy In biology, a genus (plural:...

 of about 64 species of plants in the composite family, Asteraceae
Asteraceae
The family Asteraceae or Compositae is the second largest family of flowering plants, in terms of number of species....

. Its members were previously included in the genus Senecio
Senecio
Senecio is a genus of the daisy family that includes ragworts and groundsels. The flower heads are normally rayed, completely yellow, and the heads are borne in branched clusters...

 (where they were called aureoid senecios by Asa Gray
Asa Gray
Asa Gray is considered the most important American botanist of the 19th century.He was instrumental in unifying the taxonomic knowledge of the plants of North America...

), but were divided out based on chromosome numbers, a variety of morphological
Plant morphology
Plant morphology is the general term for the study of the morphology of plants. This is usually considered distinct from plant anatomy, which is the study of the internal structure of plants, especially at the microscopic level...

 characters, and molecular phylogeny
Molecular phylogeny
Molecular phylogenetics, also known as molecular systematics, is the use of the structure of molecules to gain information on an organism's evolutionary relationships. The result of a molecular phylogenetic analysis is expressed in a phylogenetic tree....

.
  • Packera anonyma
    Packera anonyma
    Packera anonyma is a species of the genus Packera and family Asteraceae....

     (Wood) W.A. Weber & A. Löve -- Small's ragwort
  • Packera antennariifolia
    Packera antennariifolia
    Packera antennariifolia is a species of the genus Packera and family Asteraceae....

     (Britt.) W.A. Weber & A.
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Encyclopedia
Packera is a genus
Genus
In biology, a genus is a taxonomic unit used in the classification of living and fossil organisms. The term comes from Latin genus "descent, family, type, gender" , cognate with – genos, "race, stock, kin" ..In addition, genus is a taxonomic rank in the hierarchy In biology, a genus (plural:...

 of about 64 species of plants in the composite family, Asteraceae
Asteraceae
The family Asteraceae or Compositae is the second largest family of flowering plants, in terms of number of species....

. Its members were previously included in the genus Senecio
Senecio
Senecio is a genus of the daisy family that includes ragworts and groundsels. The flower heads are normally rayed, completely yellow, and the heads are borne in branched clusters...

 (where they were called aureoid senecios by Asa Gray
Asa Gray
Asa Gray is considered the most important American botanist of the 19th century.He was instrumental in unifying the taxonomic knowledge of the plants of North America...

), but were divided out based on chromosome numbers, a variety of morphological
Plant morphology
Plant morphology is the general term for the study of the morphology of plants. This is usually considered distinct from plant anatomy, which is the study of the internal structure of plants, especially at the microscopic level...

 characters, and molecular phylogeny
Molecular phylogeny
Molecular phylogenetics, also known as molecular systematics, is the use of the structure of molecules to gain information on an organism's evolutionary relationships. The result of a molecular phylogenetic analysis is expressed in a phylogenetic tree....

.

Species

  • Packera anonyma
    Packera anonyma
    Packera anonyma is a species of the genus Packera and family Asteraceae....

     (Wood) W.A. Weber & A. Löve -- Small's ragwort
  • Packera antennariifolia
    Packera antennariifolia
    Packera antennariifolia is a species of the genus Packera and family Asteraceae....

     (Britt.) W.A. Weber & A. Löve -- shalebarren ragwort
  • Packera aurea (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 (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 (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 (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 (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
    Packera glabella 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....

     (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 ionophylla (Greene) W.A. Weber & A. Löve -- Tehachapi ragwort
  • Packera layneae (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 neomexicana (Gray) W.A. Weber & A. Löve -- New Mexico groundsel
  • Packera obovata
    Packera obovata
    Packera obovata, a species of Ragwort, is an erect perennial herb native to Eastern North America. The plant was previously called Senecio obovatus....

     (Muhl. ex Willd.) W.A. Weber & A. Löve -- roundleaf ragwort
    • Senecio obovatus Muhl. ex Willd.
  • Packera ogotorukensis (Packer) A.& D. Löve -- Ogotoruk Creek ragwort
  • Packera pauciflora (Pursh) A.& D. Löve -- alpine groundsel
  • Packera paupercula
    Packera paupercula
    Packera paupercula is a flowering plant species of the genus Packera and family Asteraceae, native to many parts of northern North America and the southeastern United States. It is taxonomically complex, and many have proposed, or expect future proposals, to break it into species, subspecies,...

     (Michx.) A.& D. Löve -- balsam groundsel
  • Packera plattensis
    Packera plattensis
    Packera plattensis, also known as prairie ragwort or prairie groundsel is a species of the genus Packera and family Asteraceae. It used to be a Senecio....

     (Nutt.) W.A. Weber & A. Löve -- prairie groundsel
    • Senecio plattensis Nutt.
  • Packera porteri (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 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 (Rydb.) W.A. Weber & A. Löve -- threetooth ragwort
  • Packera werneriifolia (Gray) W.A. Weber & A. Löve -- hoary groundsel

Sources: ITIS, NRCS