Oreostemma

{{Short description|Genus of flowering plants in the family Asteraceae}}

{{Automatic taxobox

| image = Oreostemma alpigenum flower 1.jpg

| image_caption =Oreostemma alpigenum

| display_parents = 3

| taxon = Oreostemma

| authority = Greene

| synonyms_ref = [https://archive.today/20141106174748/http://dixon.iplantcollaborative.org/CompositaeWeb/Default.aspx?Page=AdvNameSearch Flann, C (ed) 2009+ Global Compositae Checklist ]

| synonyms =

• Oreastrum Greene 1896, illegitimate near-homonym, not Oriastrum Poepp. 1843
• Aster subg. Oreostemma (Greene) Peck

}}

Oreostemma is a genus of flowering plants in the family Asteraceae.[https://www.biodiversitylibrary.org/page/13065378#page/35/mode/1up Nesom, Guy L. 1993. The genus Oreostemma (Asteraceae: Astereae). Phytologia 74(4): 305–316] Species are found in western North America, with two endemic to California.{{cite web

| url = http://ww2.bgbm.org/EuroPlusMed/PTaxonDetail.asp?NameId=131772&PTRefFk=7000000

| title = Details for: Astereae

| accessdate = 2009-07-18

| author = Botanic Garden and Botanical Museum Berlin-Dahlem

| authorlink = Botanical Garden in Berlin

| work = Euro+Med PlantBase

| publisher = Freie Universität Berlin

}}{{UniProt Taxonomy

| name = Tribe Astereae

| id = 199231

| accessdate = 2009-07-18

}}{{cite web

| url = http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=gn&name=Kippistia

| title = Genus Kippistia

| accessdate = 2009-07-18

| author = National Herbarium of New South Wales

| work = New South Wales FloraOnline

| publisher = Royal Botanic Gardens, Sydney

}}{{cite web

| url = http://www.ville-ge.ch/cjb/bd/africa/details.php?langue=an&id=3041

| title = Polyarrhena Cass.

| accessdate = 2009-07-18

| work = African Plants Database

| publisher = South African National Biodiversity Institute, the Conservatoire et Jardin botaniques de la Ville de Genève and Tela Botanica

}}Cronquist, A. 1948. A revision of the Oreastrum group of Aster. Leaflets of Western Botany 5: 73–82.Nesom, G. L. 1993. The genus Oreostemma (Asteraceae: Astereae). Phytologia 74: 305–316.

; Species[http://bonap.net/NAPA/TaxonMaps/Genus/County/Oreostemma Biota of North America Program 2013 county distribution maps]

• Oreostemma alpigenum (Tundra aster) — California, Nevada, Oregon, Washington, Idaho, Montana, Wyoming
• Oreostemma elatum (Plumas alpine aster) — Sierra Nevada, California [http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Oreostemma+elatum Calflora database: Oreostemma elatum][http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=80207 Jepson: Oreostemma elatum]
• Oreostemma peirsonii (Peirson's aster) — endemic to California, in the southern Sierra Nevada.[http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=80346 Jepson: Oreostemma peirsonii]