Flourensia
| Flourensia | |
|---|---|
 
 | |
| Flourensia cernua | |
| Scientific classification  | |
| Kingdom: | Plantae | 
| Clade: | Tracheophytes | 
| Clade: | Angiosperms | 
| Clade: | Eudicots | 
| Clade: | Asterids | 
| Order: | Asterales | 
| Family: | Asteraceae | 
| Subfamily: | Asteroideae | 
| Tribe: | Heliantheae | 
| Subtribe: | Enceliinae | 
| Genus: | DC.[1]  | 
| Type species | |
| Flourensia laurifolia[2][3] | |
Flourensia is a genus of flowering plants in the family Asteraceae.[4] It contains subshrubs and shrubs,[5] which are commonly known as tarworts.[6] They are found in the southwestern United States, Mexico, and central South America (Bolivia and northern Argentina).[7] The genus name honours French physiologist Jean Pierre Flourens (1794–1867).[5]
Phylogenetic studies found that the genus as previously circumscribed was polyphyletic, and in 2023 many of the South American species were placed in the new genus Austroflourensia.[8]
Species
20 species are currently accepted.[7][9]
- Flourensia blakeana M.O.Dillon – Argentina (Tucuman, Catamarca)
 - Flourensia campestris Griseb. – Argentina (La Rioja, San Juan, Santiago del Estero, Catamarca)
 - Flourensia cernua DC. – American tarwort, tarbush - Chihuahua, Coahuila, USA (Texas New Mexico Arizona)
 - Flourensia collodes (Greenm.) S.F.Blake – Chiapas, Oaxaca
 - Flourensia dentata S.F.Blake – Zacatecas
 - Flourensia glutinosa (B.L.Rob. & Greenm.) S.F.Blake - Oaxaca and Puebla
 - Flourensia hirta S.F.Blake – Argentina (La Rioja, Catamarca)
 - Flourensia ilicifolia Brandegee – Coahuila
 - Flourensia laurifolia DC. – San Luis Potosí, Tamaulipas, Hidalgo
 - Flourensia leptopoda S.F.Blake – Argentina (La Rioja, San Juan)
 - Flourensia macroligulata Seeligm. – Argentina (Jujuy, Tucuman)
 - Flourensia microphylla S.F.Blake
 - Flourensia monticola M.O. Dillon – Coahuila, Nuevo León
 - Flourensia oolepis S.F.Blake – Argentina (Catamarca, Córdoba, San Luis)
 - Flourensia pringlei (A.Gray) S.F.Blake – Chihuahua, Durango, New Mexico (Hidalgo County)
 - Flourensia pulcherrima M.O.Dillon – Durango
 - Flourensia resinosa (Brandegee) S.F.Blake – Hidalgo, Querétaro
 - Flourensia retinophylla S.F.Blake – Coahuila
 - Flourensia riparia Griseb. – Argentina (Jujuy, Salta, Catamarca, Tucuman)
 - Flourensia solitaria S.F.Blake – Coahuila
 
Formerly placed here
- Austroflourensia angustifolia (DC.) J.C.Ospina & S.E.Freire (aș Flourensia angustifolia (DC.) S.F.Blake) – Peru
 - Austroflourensia cajabambensis (M.O.Dillon) J.C.Ospina & S.E.Freire (as Flourensia cajabambensis M.O.Dillon) – Peru
 - Austroflourensia fiebrigii (S.F.Blake) J.C.Ospina & S.E.Freire (as Flourensia fiebrigii S.F.Blake) – Argentina, Bolivia
 - Austroflourensia glutinosa (Rusby) J.C.Ospina & S.E.Freire (as Flourensia heterolepis S.F.Blake) – Bolivia (Cochabamba, Santa Cruz), Peru (Cusco)
 - Austroflourensia hirtissima (S.F.Blake) J.C.Ospina & S.E.Freire (as Flourensia hirtissima S.F.Blake) – Argentina (Río Negro)
 - Austroflourensia macrophylla (S.F.Blake) J.C.Ospina & S.E.Freire (as Flourensia macrophylla (A.Gray) S.F.Blake) – Peru
 - Austroflourensia niederleinii (S.F.Blake) J.C.Ospina & S.E.Freire (as Flourensia niederleinii S.F.Blake) – Argentina (La Rioja)
 - Austroflourensia peruviana (M.O.Dillon) J.C.Ospina & S.E.Freire (as Flourensia peruviana M.O.Dillon) – Peru (Ayacucho, Huancavelica)
 - Austroflourensia polycephala (M.O.Dillon) J.C.Ospina & S.E.Freire (as Flourensia polycephala M.O.Dillon) – Peru (Apurímac, Cusco)
 - Austroflourensia suffrutescens (R.E.Fr.) J.C.Ospina & S.E.Freire (as Flourensia polyclada S.F.Blake and Flourensia suffrutescens S.F.Blake) – Argentina (Jujuy, Salta)
 - Austroflourensia thurifera (Molina) J.C.Ospina & S.E.Freire (as Flourensia thurifera (Molina) DC.) – Chile (Coquimbo, Santiago, Valparaíso)
 - Austroflourensia tortuosa (Griseb.) J.C.Ospina & S.E.Freire (as Flourensia tortuosa Griseb.) – Argentina (Salta, Catamarca, Tucuman)
 
References
- ^ "Genus: Flourensia DC". Germplasm Resources Information Network. United States Department of Agriculture. 1996-09-17. Retrieved 2012-01-12.
 - ^ lectotype designated by S.F. Blake, Contr. U.S. Natl. Herb. 20: 394 (1921)
 - ^ Tropicos, Flourensia DC.
 - ^ Candolle, Augustin Pyramus de. 1836. Prodromus Systematis Naturalis Regni Vegetabilis 5: 592–593 in Latin
 - ^ a b Strother, John L. "Flourensia de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 592. 1836". Flora of North America. eFloras.org. Retrieved 2012-01-12.
 - ^ "Flourensia". Integrated Taxonomic Information System. Retrieved 2012-01-12.
 - ^ a b "Flourensia DC". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 1 April 2025.
 - ^ Freire SE, Ospina JC, Aagesen L, Espinar LA, Panero JL, Scataglini MA. Unraveling Polyphyly in Flourensia (Asteraceae, Heliantheae, Enceliinae) and the Establishment of a New Genus Austroflourensia. An Acad Bras Cienc. 2023 Feb 17;95(2):e20191135. doi: 10.1590/0001-3765202320191135. PMID: 36820759.
 - ^ Flann, C (ed) 2009+ Global Compositae Checklist search for Flourensia
 
External links
 Media related to Flourensia at Wikimedia Commons
 Data related to Flourensia at Wikispecies
