{{Short description|Genus of flowering plants}} {{Automatic taxobox |image = Perityle emoryi flower.jpg |image_caption = ''Perityle emoryi'' |display_parents = 3 |taxon = Perityle |authority = Benth. (1844) |synonyms = * ''Amauria'' {{small|Benth. (1844)}} * ''Closia'' {{small|J.Rémy (1849)}} * ''Lycapsus'' {{small|Phil. (1870)}} |synonyms_ref = <ref name = powo>[https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:326936-2 ''Perityle'' Benth.] ''Plants of the World Online''. Retrieved 22 June 2024.</ref> }}
'''''Perityle''''' is a genus of flowering plants in the daisy family.<ref>[https://www.biodiversitylibrary.org/page/780173#page/34/mode/1up Bentham, George. 1844. Botany of the Voyage of H.M.S. Sulphur 23] descriptions in Latin, commentary in English</ref><ref>[https://www.biodiversitylibrary.org/page/780173#page/34/mode/1up Bentham, George. 1844. Botany of the Voyage of H.M.S. Sulphur 23] line drawing of ''Perityle californica''</ref><ref>[http://www.tropicos.org/Name/40004839 Tropicos, ''Perityle'' Benth.]</ref> They are known generally as '''rock daisies'''.<ref name=g/>
''Perityle'' is a variable genus, with its members sharing few characteristics. They include small herbs to spreading shrubs and most bear yellow or white daisylike flower heads. The fruit is generally a flat seed with thickened margins which may or may not have a pappus or scales. Plants of this genus are native to North and South America.<ref name=g>[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=124595 Flora of North America Vol. 21 Page 317 ''Perityle'' Bentham]</ref>
A study including morphological and cytological analyses and a phylogenomic analysis of chloroplast and nuclear genomes was published in 2022, and concluded that ''Perityle'' as previously circumscribed was polyphyletic. The authors revived and/or expanded the genera ''Galinsogeopsis'', ''Laphamia'', and ''Nesothamnus'' to establish monophyletic clades. The small genus ''Amauria'' and the Desventuradas Islands endemic species ''Lycapsus tenuifolius'' were merged into ''Perityle'', leaving it with 13 species.<ref>Isaac H. Lichter-Marck and Bruce G. Baldwin "A Phylogenetically Informed Reclassification of the Rock Daisies (Perityleae; Compositae)," ''Systematic Botany'' 47(3), 802-816, (16 September 2022). https://doi.org/10.1600/036364422X16573019348328</ref>
==Species== 13 species are currently accepted.<ref name = powo/><ref name=j>[http://dixon.iplantcollaborative.org/CompositaeWeb/default.aspx?Page=NameDetails&TabNum=0&NameId=2240bcd1-4189-446d-9872-7538a3176092 Flann, C (ed) 2009+ Global Compositae Checklist ] {{webarchive|url=https://archive.today/20141115175444/http://dixon.iplantcollaborative.org/CompositaeWeb/default.aspx?Page=NameDetails&TabNum=0&NameId=2240bcd1-4189-446d-9872-7538a3176092 |date=2014-11-15 }}</ref>
{{Columns-list|colwidth=22em| * ''Perityle aurea'' <small>Rose</small> * ''Perityle brandegeeana'' {{small|Rose}} * ''Perityle californica'' <small>Benth.</small> * ''Perityle carterae'' {{small|(A.M.Powell) Lichter-Marck}} * ''Perityle congesta'' <small>(M.E.Jones) Shinners</small> * ''Perityle crassifolia'' <small>Brandegee</small> * ''Perityle cuneata'' <small>Brandegee</small> * ''Perityle emoryi'' <small>Torr.</small> * ''Perityle rosei'' <small>Greenm.</small> * ''Perityle rotundifolia'' {{small|(Benth.) Brandegee}} * ''Perityle socorrosensis'' <small>Rose</small> * ''Perityle tenuifolius'' {{small|(Phil.) Lichter-Marck}} * ''Perityle trichodonta'' <small>S.F.Blake</small> }}
===Formerly placed here=== * ''Laphamia fosteri'' {{small|(A.M.Powell) Lichter-Marck}} (as ''Perityle fosteri'' <small>A.M.Powell</small>) * ''Laphamia inyoensis'' {{small|Ferris}} (as ''Perityle inyoensis'' <small>(Ferris) A.M.Powell</small>) * ''Laphamia lindheimeri'' <small>A.Gray</small> (as ''Perityle lindheimeri'' <small>(A.Gray) Shinners</small>) * ''Laphamia saxicola'' <small>Eastw.</small> (as ''Perityle saxicola'' <small>(Eastw.) Shinners</small>) *''Nesothamnus incanus'' {{small|(A.Gray) Rydb.}} (as ''Perityle incana'' <small>A.Gray</small>)
==References== {{Reflist}}
==External links== * {{Commons category-inline}} * [http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?609,1684 Jepson Manual Treatment] * [https://plants.usda.gov/java/profile?symbol=PERIT USDA Plants Profile]
{{Taxonbar|from=Q7168924}} {{Authority control}}
Category:Perityleae Category:Asteraceae genera Category:Flora of the Americas Category:Taxa named by George Bentham