Packera
Encyclopedia
Packera is a genus
of about 64 species of plants in the composite family, Asteraceae
. Its members were previously included in the genus Senecio
(where they were called aureoid senecios by Asa Gray
), but were divided out based on chromosome numbers, a variety of morphological
characters, and molecular phylogeny
.
Sources: ITIS, NRCS
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of about 64 species of plants in the composite family, Asteraceae
Asteraceae
The Asteraceae or Compositae , is an exceedingly large and widespread family of vascular plants. The group has more than 22,750 currently accepted species, spread across 1620 genera and 12 subfamilies...
. 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
-References:*Asa Gray. Dictionary of American Biography. American Council of Learned Societies, 1928–1936.*Asa Gray. Encyclopedia of World Biography, 2nd ed. 17 Vols. Gale Research, 1998.*Asa Gray. Plant Sciences. 4 vols. Macmillan Reference USA, 2001....
), but were divided out based on chromosome numbers, a variety of morphological
Plant morphology
Plant morphology or phytomorphology is the study of the physical form and external structure 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 is the analysis of hereditary molecular differences, mainly in DNA sequences, to gain information on an organism's evolutionary relationships. The result of a molecular phylogenetic analysis is expressed in a phylogenetic tree...
.
Species
- Packera anonymaPackera anonymaPackera anonyma is a species of the genus Packera and family Asteraceae....
(Wood) W.A. Weber & A. Löve -- Small's ragwort - Packera antennariifoliaPackera antennariifoliaPackera 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 bernardinaPackera bernardinaPackera bernardina is a rare species of flowering plant in the aster family known by the common name San Bernardino ragwort. It is endemic to the San Bernardino Mountains of southern California, where it is known from about twenty occurrences...
(Greene) W.A. Weber & A. Löve -- San Bernardino ragwort - Packera bolanderiPackera bolanderiPackera bolanderi is a species of flowering plant in the aster family known by the common name Bolander's ragwort. It is native to the west coast of the United States from Washington to northern California, where it grows in wet coastal forests and woodlands...
(Gray) W.A. Weber & A. Löve -- Bolander's ragwort - Packera breweriPackera breweriPackera 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....
(Burtt-Davy) W.A. Weber & A. Löve -- Brewer's ragwort- Senecio breweri Burtt-Davy
- Packera canaPackera canaPackera cana is a species of flowering plant in the aster family known by the common name woolly groundsel. It is native to western and central North America, where it can be found in a wide array of habitat types at all elevations from grassland to the alpine climates of mountain peaks.It is a...
(Hook.) W.A. Weber & A. Löve -- woolly groundsel - Packera cardamine (Greene) W.A. Weber & A. Löve -- bittercress ragwort
- Packera castoreusPackera castoreusPackera castoreus is a rare species of flowering plant in the aster family known by the common names Beaver Mountain groundsel and Beaver Mountain ragwort. It is endemic to Utah in the United States, where it occurs only in the Tushar Mountains....
(Welsh) Kartesz, comb. nov. ined. -- Beaver Mountain ragwort - Packera clevelandiiPackera clevelandiiPackera 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 around Napa County and a part of the Sierra Nevada...
(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 eurycephalaPackera eurycephalaPackera 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 Nevada...
(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 franciscanaPackera franciscanaPackera franciscana 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 States, where it is known only from the San Francisco Peaks in Coconino County. It is...
(Greene) W.A. Weber & A. Löve -- San Francisco Peaks ragwort- Senecio franciscanus Greene -- San Francisco Peaks groundsel
- Packera ganderiPackera ganderiPackera ganderi is a rare species of flowering plant in the aster family known by the common name Gander's ragwort. It is endemic to southern California, where it is known from a few occurrences in San Diego and Riverside Counties....
(T.M. Barkl. & Beauchamp) W.A. Weber & A. Löve -- Gander's ragwort - Packera glabellaPackera glabellaPackera 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 greeneiPackera greeneiPackera 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...
(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 indecoraPackera indecoraPackera indecora is a species of flowering plant in the aster family known by the common names elegant groundsel and rayless mountain ragwort. It is native to northern North America including most of Canada and sections of the northernmost United States...
(Greene) A.& D. Löve -- elegant groundsel - Packera ionophyllaPackera ionophyllaPackera ionophylla is an uncommon species of flowering plant in the aster family known by the common name Tehachapi ragwort. It is endemic to California, where it is known from the Tehachapi Mountains, the San Gabriel and San Bernardino Mountains, and Alamo Mountain near the Grapevine...
(Greene) W.A. Weber & A. Löve -- Tehachapi ragwort - Packera layneaePackera layneaePackera layneae, known by the common name Layne's ragwort, is a rare species of flowering plant in the aster family. It is endemic to California, where it is known only from the western slopes of the northern Sierra Nevada foothills, such as the Pine Hill Ecological Reserve.-Description:Packera...
(Greene) W.A. Weber & A. Löve -- Layne's ragwort - Packera macouniiPackera macouniiPackera macounii is a species of flowering plant in the aster family known by the common name Siskiyou Mountains ragwort. It is native to the west coast of North America from British Columbia to far northern California, where it grows in chaparral and mountain forests, often on serpentine soils.It...
(Greene) W.A. Weber & A. Löve -- Siskiyou Mountain ragwort - Packera malmsteniiPackera malmsteniiPackera malmstenii is a rare species of flowering plant in the aster family known by the common name Podunk ragwort. It is endemic to Utah in the United States, where there about 19 occurrences in the southwestern part of the state....
(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 multilobataPackera multilobataPackera 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 many habitat types.It is an annual or perennial herb...
(Torr. & Gray ex Gray) W.A. Weber & A. Löve -- lobeleaf groundsel- Senecio multilobatus Torr. & Gray ex Gray
- Packera musiniensisPackera musiniensisPackera musiniensis is a rare species of flowering plant in the aster family known by the common names Musinea ragwort and Musinea groundsel...
(S. L. Welsh) Trock - Packera neomexicana (Gray) W.A. Weber & A. Löve -- New Mexico groundsel
- Packera obovataPackera obovataPackera 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 paucifloraPackera paucifloraPackera pauciflora is a species of flowering plant in the aster family known by the common name alpine groundsel. It is native to northern North America, where it can be found in parts of western and eastern Canada and the northwestern United States...
(Pursh) A.& D. Löve -- alpine groundsel - Packera pauperculaPackera pauperculaPackera 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....
(Michx.) A.& D. Löve -- balsam groundsel - Packera plattensisPackera plattensisPackera 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 pseudaureaPackera pseudaureaPackera pseudaurea is a species of flowering plant in the aster family known by the common name falsegold groundsel. It is native to North America, where it can be found in western and central parts of Canada and the United States...
(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 streptanthifoliaPackera streptanthifoliaPackera streptanthifolia is a species of flowering plant in the aster family known by the common name Rocky Mountain groundsel. It is native to western North America from Alaska to California to New Mexico, where it can be found in mountain habitat including woodlands and rocky slopes.It is a...
(Greene) W.A. Weber & A. Löve -- Rocky Mountain groundsel - Packera subnudaPackera subnudaPackera subnuda is a species of flowering plant in the aster family known by the common names Buek's groundsel and cleftleaf groundsel...
(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 werneriifoliaPackera werneriifoliaPackera werneriifolia is a species of flowering plant in the aster family known by the common name hoary groundsel. It is native to the western United States, where it grows in mountain habitat in subalpine and alpine climates, including forests and barren talus.It is a perennial herb which is...
(Gray) W.A. Weber & A. Löve -- hoary groundsel
Sources: ITIS, NRCS