Packera


Packera is a genus of about 75 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, but were moved to genus Packera based on chromosome numbers, a variety of morphological characters, and molecular phylogenetic evidence.

Species

, Plants of the World Online accepted the following species. English names are based on the PLANTS database.
  • Packera actinella W.A.Weber & Á.Löve – flagstaff ragwort
  • Packera anonyma W.A.Weber & A.Löve − Small's ragwort
  • Packera antennariifolia W.A.Weber & A.Löve − shalebarren ragwort
  • Packera aurea Á.Löve & D.Löve − golden ragwort
  • Packera bellidifolia W.A.Weber & Á.Löve
  • Packera bernardina W.A.Weber & A.Löve − San Bernardino ragwort
  • Packera bolanderi W.A.Weber & A.Löve − Bolander's ragwort
  • Packera breweri W.A.Weber & A.Löve − Brewer's ragwort
  • Packera cana W.A.Weber & A.Löve − woolly groundsel
  • Packera candidissima W.A.Weber & Á.Löve
  • Packera cardamine W.A.Weber & A.Löve − bittercress ragwort
  • Packera castoreus Kartesz − Beaver Mountain ragwort
  • Packera clevelandii W.A.Weber & A.Löve − Cleveland's ragwort
  • Packera coahuilensis C.Jeffrey
  • Packera contermina J.F.Bain
  • Packera crawfordii A.M.Mahoney & R.R.Kowal
  • Packera crocata W.A.Weber & A.Löve − saffron ragwort
  • Packera cymbalaria W.A.Weber & A.Löve − dwarf arctic ragwort
  • Packera cynthioides W.A.Weber & A.Löve − White Mountain ragwort
  • Packera debilis W.A.Weber & A.Löve − weak groundsel
  • Packera dimorphophylla W.A.Weber & A.Löve − splitleaf groundsel
  • Packera dubia Trock & Mabb. − woolly ragwort
  • Packera eurycephala W.A.Weber & A.Löve − widehead groundsel
  • Packera fendleri W.A.Weber & A.Löve − Fendler's ragwort
  • Packera flettii W.A.Weber & A.Löve − Flett's ragwort
  • Packera franciscana W.A.Weber & A.Löve − San Francisco Peaks ragwort
  • Packera ganderi W.A.Weber & Á.Löve − Gander's ragwort
  • Packera glabella C.Jeffrey − butterweed
  • Packera greenei W.A.Weber & A.Löve − flame ragwort
  • Packera hartiana W.A.Weber & A.Löve − Hart's ragwort
  • Packera hesperia W.A.Weber & A.Löve − western ragwort
  • Packera heterophylla E.Wiebe
  • Packera hintoniorum C.Jeffrey
  • Packera hyperborealis Á.Löve & D.Löve − northern groundsel
  • Packera indecora Á.Löve & D.Löve − elegant groundsel
  • Packera insulae-regalis R.R.Kowal − Isle Royale ragwort
  • Packera ionophylla W.A.Weber & A.Löve − Tehachapi ragwort
  • Packera layneae W.A.Weber & A.Löve − Layne's ragwort
  • Packera loratifolia W.A.Weber & Á.Löve
  • Packera macounii W.A.Weber & A.Löve − Siskiyou Mountain ragwort
  • Packera malmstenii Kartesz − Podunk ragwort
  • Packera mancosiana Yeatts, B.Schneid. & Al Schneid.
  • Packera × memmingeri Weakley
  • Packera millefolium W.A.Weber & Á.Löve − piedmont ragwort
  • Packera millelobata W.A.Weber & A.Löve − Uinta ragwort
  • Packera montereyana C.Jeffrey
  • Packera moranii C.Jeffrey
  • Packera multilobata W.A.Weber & Á.Löve − lobeleaf groundsel
  • Packera musiniensis Trock
  • Packera neomexicana W.A.Weber & A.Löve − New Mexico groundsel
  • Packera obovata W.A.Weber & A.Löve − roundleaf ragwort
  • Packera ogotorukensis Á.Löve & D.Löve − Ogotoruk Creek ragwort
  • Packera pauciflora Á.Löve & D.Löve − alpine groundsel
  • Packera paupercula Á.Löve & D.Löve − balsam groundsel
  • Packera plattensis W.A.Weber & A.Löve − prairie groundsel
  • Packera porteri C.Jeffrey − Porter's groundsel
  • Packera pseudaurea W.A.Weber & A.Löve − falsegold groundsel
  • Packera quebradensis W.A.Weber & Á.Löve
  • Packera quercetorum C.Jeffrey − Oak Creek ragwort
  • Packera rosei W.A.Weber & Á.Löve
  • Packera sanguisorbae C.Jeffrey
  • Packera sanguisorboides W.A.Weber & A.Löve − burnet ragwort
  • Packera scalaris C.Jeffrey
  • Packera schweinitziana W.A.Weber & A.Löve − Schweinitz's ragwort
  • Packera serpenticola Boufford, Kartesz, S.H.Shi & R.Zhou − serpentine ragwort
  • Packera spellenbergii C.Jeffrey − Carrizo Creek ragwort
  • Packera streptanthifolia W.A.Weber & A.Löve − Rocky Mountain groundsel
  • Packera subnuda Trock & T.M.Barkley – Buek's groundsel
  • Packera tampicana C.Jeffrey − Great Plains ragwort
  • Packera texensis O'Kennon & Trock
  • Packera thurberi B.L.Turner
  • Packera toluccana W.A.Weber & Á.Löve
  • Packera umbraculifera W.A.Weber & Á.Löve
  • Packera werneriifolia W.A.Weber & A.Löve − hoary groundsel
  • Packera zimapanica C.C.Freeman & T.M.Barkley