Onoseris

{{Short description|Genus of flowering plants}}

{{Automatic taxobox

|image = Onoseris alata FruitsLeaves BotGard0906.JPG

|image_caption = Onoseris alata

|display_parents = 2

|taxon = Onoseris

|authority = Willd.

|type_species = Atractylis purpurealectotype designated by R. Ferreyra, J. Arnold Arbor. 25: 350 (1944)[http://www.tropicos.org/Name/40032088 Tropicos, Onoseris Willd.]

|type_species_authority = L.f.

|synonyms_ref =

|synonyms =

• Cladoseris (Less.) Spach
• Chaetachlaena D.Don
• Seris Willd.
• Pereziopsis Coult.
• Cursonia Nutt.
• Onoseris sect. Cladoseris Less.
• Hipposeris Cass.
• Hilairia DC.
• Schaetzellia Klotzsch
• Rhodoseris Turcz.
• Isotypus Kunth
• Cataleuca K.Koch & Fintelm.
• Centroclinium D.Don
• Pereziopsis J.M.Coult.
• Caloseris Benth.

}}

Onoseris is a genus of Mesoamerican and South American flowering plants in the family Asteraceae.[https://www.biodiversitylibrary.org/page/667091#page/228/mode/1up Willdenow, Carl Ludwig von. 1803. Species Plantarum. Editio quarta 3(3): 1702] in Latin

; Species:

{{columns-list|colwidth=22em|

• Onoseris acerifolia Kunth
• Onoseris alata Rusby
• Onoseris albicans (D.Don) Ferreyra
• Onoseris annua Less.
• Onoseris brasiliensis Cabrera
• Onoseris castelnaeana Wedd.
• Onoseris cumingii Hook. & Arn.
• Onoseris donnell-smithii (J.M.Coult.) Ferreyra
• Onoseris drakeana André
• Onoseris fraterna S.F.Blake
• Onoseris gnaphalioides Muschl.
• Onoseris hastata Wedd.
• Onoseris hyssopifolia Kunth
• Onoseris odorata (D.Don) Hook. & Arn.
• Onoseris onoseroides (Kunth) B.L.Rob.
• Onoseris purpurata Willd.
• Onoseris purpurea (L.f.) S.F.Blake
• Onoseris sagittata (Rusby) Rusby
• Onoseris salicifolia Kunth
• Onoseris silvatica Greenm.
• Onoseris speciosa Kunth

}}

; Formerly included[http://dixon.iplantcollaborative.org/compositaeweb/Default.aspx?Page=AdvNameSearch Flann, C (ed) 2009+ Global Compositae Checklist ] {{webarchive|url=https://archive.today/20141106174748/http://dixon.iplantcollaborative.org/CompositaeWeb/Default.aspx?Page=AdvNameSearch |date=2014-11-06 }}

Several species once considered members of Onoseris are now regarded as better suited to other genera: Actinoseris, Criscia, Hieracium, Ianthopappus, Lycoseris, Noticastrum, Trichocline, and Urmenetea.