Trisetum flavescens(L.) P.Beauv.

golden oat grassyellow oat-grassyellow oatgrass

WFO wfo-0000905119 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Trisetum flavescens, photographed by Pavel Kacl
fig. a Pavel Kacl, CC BY 4.0 / 2022-06-12 / obs. 205824941
Trisetum flavescens, photographed by Pavel Kacl
fig. b Pavel Kacl, CC BY 4.0 / obs. 205823623
Trisetum flavescens, photographed by Pavel Kacl
fig. c Pavel Kacl, CC BY 4.0 / obs. 205067677
Trisetum flavescens, photographed by Pavel Kacl
fig. d Pavel Kacl, CC BY 4.0 / obs. 203596910
Trisetum flavescens, photographed by Pavel Kacl
fig. e Pavel Kacl, CC BY 4.0 / obs. 203632015
Trisetum flavescens, photographed by Pavel Kacl
fig. f Pavel Kacl, CC BY 4.0 / obs. 203608140
Trisetum flavescens, photographed by Pavel Kacl
fig. g Pavel Kacl, CC BY 4.0 / obs. 203632367
Trisetum flavescens, photographed by Björn Sothmann
fig. h Björn Sothmann, CC BY-SA 4.0 / obs. 200326129

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 41 botanical countries

Regions where Trisetum flavescens is native: Algeria, Azores, Morocco, Tunisia, Iran, Iraq, Lebanon-Syria, North Caucasus, Transcaucasus, Türkiye, Turkmenistan, Albania, Austria, Belarus, Belgium, Bulgaria, Central European Russia, Corse, Czechia-Slovakia, East European Russia, France, Germany, Great Britain, Greece, Hungary, Ireland, Italy, Kriti, Netherlands, Northwest European Russia, NW. Balkan Pen., Poland, Portugal, Romania, Sardegna, Sicilia, Spain, Sweden, Switzerland, Türkiye-in-Europe, Ukraine AlgeriaMoroccoTunisiaIranIraqLebanon-SyriaNorth CaucasusTranscaucasusTürkiyeTurkmenistanAlbaniaAustriaBelarusBelgiumBulgariaCentral European RussiaCorseCzechia-SlovakiaEast European RussiaFranceGermanyGreeceHungaryIrelandItalyKritiNetherlandsNorthwest European RussiaNW. Balkan Pen.PolandPortugalRomaniaSiciliaSpainSwedenSwitzerlandTürkiye-in-EuropeUkraine AzoresSardegna
Native distribution of Trisetum flavescens, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
Albania ALB EUROPE
Austria AUT
Belarus BLR
Belgium BGM
Bulgaria BUL
Central European Russia RUC
Corse COR
Czechia-Slovakia CZE
East European Russia RUE
France FRA
Germany GER
Great Britain GRB
Greece GRC
Hungary HUN
Ireland IRE
Italy ITA
Kriti KRI
Netherlands NET
Northwest European Russia RUW
NW. Balkan Pen. YUG
Poland POL
Portugal POR
Romania ROM
Sardegna SAR
Sicilia SIC
Spain SPA
Sweden SWE
Switzerland SWI
Türkiye-in-Europe TUE
Ukraine UKR
Iran IRN ASIA-TEMPERATE
Iraq IRQ
Lebanon-Syria LBS
North Caucasus NCS
Transcaucasus TCS
Türkiye TUR
Turkmenistan TKM
Algeria ALG AFRICA
Azores AZO
Morocco MOR
Tunisia TUN

Not drawn on the map: Great Britain. We hold no public-domain boundary for this region, so it is listed rather than guessed at.

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Flowering 40 in flower of 51 examined

Peak flowering in May. Each bar is the share of Trisetum flavescens observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 40 of 51 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 8 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Also published as 80 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Avena alpestris var. purpurascens (DC.) DC.
  • Avena burnoufii (Req. ex Parl.) Nyman
  • Avena candollei M.Serres
  • Avena candollei Nyman
  • Avena flavescens L.
  • Avena flavescens subsp. pindica Hausskn.
  • Avena flavescens subsp. purpurascens (DC.) Nyman
  • Avena flavescens var. capillacea Gaudin
  • Avena flavescens var. depauperata Mert. & W.D.J.Koch
  • Avena flavescens var. hirsuta Pauquy
  • Avena flavescens var. lutescens Rchb.
  • Avena flavescens var. major Mert. & W.D.J.Koch
  • Avena flavescens var. pratensis Neilr.
  • Avena flavescens var. variegata Gaudin ex Mert. & W.D.J.Koch
  • Avena flavescens var. villosa Bluff & Fingerh.
  • Avena flavescens var. violacea St.-Lag.
  • Avena flavescens var. vulgaris Alef.
  • Avena purpurascens DC.
  • Avena splendens (C.Presl) Guss.
  • Avenastrum flavescens (L.) Jess.
  • Trisetaria burnoufii (Req. ex Parl.) Banfi & Soldano
  • Trisetaria flavescens (L.) Baumg.
  • Trisetaria flavescens subsp. purpurascens (DC.) Banfi & Soldano
  • Trisetaria flavescens subsp. splendens (C.Presl) Banfi & Soldano

and 56 more.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.