Iridaceae

Yellow iris

Iris pseudacorus L.

Family: Iridaceae
Genus: Iris

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Yellow iris (Iris pseudacorus) — FlowerPhoto: Анна Рыбакова, CC BY 4.0, from iNaturalist

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Common names

By language (55)

Arabic: سوسن أصفر, سياف
arz: سوسن اصفر
Asturian: Lliriu mariellu
azb: ساری سوسن
Basque: Lirio hori
Belarusian: Касач жоўты
Breton: Elestr
Bulgarian: Блатна перуника
Cantonese: 黃菖蒲
Catalan: Lliri groc, Coltell groc
Chinese: 黃菖蒲, 黄菖蒲, 黄鸢尾
Croatian: Žuta perunika
csb: Żôłti józefk
Czech: Kosatec žlutý
Danish: Gul Iris, Gul Sværdlilje
Dutch: Gele lis, Gele iris
English: Yellow iris, Paleyellow iris, Water flag, Yellow flag
Estonian: Kollane võhumõõk
Finnish: Keltakurjenmiekka, Kurjenmiekka
French: Iris d'eau
frr: Güül Wüf, Güül Wüfen
Galician: Lirio amarelo
Georgian: Წყლის ზამბახი
German: Sumpf-Schwertlilie, Gelbe Schwertlilie, Sumpfschwertlilie, Wasser-Schwertlilie, Wasserschwertlilie
gv: Cleeshag
Hebrew: אירוס ענף
hsb: Wódna škleńčica, Wódna dźiwja lilija, Wódna łučna lilija
Hungarian: Sárga nőszirom, Mocsári nőszirom
Icelandic: Sverðlilja
Indonesian: Brojo kuning
Irish: Feileastram
Italian: Giaggiolo acquatico, Iris d'acqua
Japanese: キショウブ
Korean: 노랑꽃창포
kw: Elester
Latvian: Purva skalbe
Lithuanian: Geltonasis vilkdalgis
Macedonian: Блатна перуника
nds: Leus, Pinksterbloeme, Pinksterblomme
Norwegian Bokmål: Sverdlilje
Norwegian Nynorsk: Sverdlilje
Persian: پرچم زرد
Polish: Kosaciec żółty
Romanian: Stânjenel galben, Stînjenel galben
Russian: Ирис ложноаировый, Ирис аировидный, Ирис болотный, Ирис водяной, Ирис желтый, Ирис жёлтый, Ирис ложноаирный
se: Fiskisiris
Slovak: Kosatec žltý
Slovenian: Vodna perunika
smn: Fiskiskuorgâmiekki
Spanish: Acaro bastardo, Acoro acuatico amarillo, Acoro acuático amarillo, Acoro bastardo, Acoro falso, Acoro palustre, Alsusena, Azucena amarilla
Swedish: Svärdslilja, Bäckasvärla, Svärdlilja
Turkish: Bataklık süseni
Ukrainian: Півники болотні, Півник болотняний, Півник болотяний
Welsh: Gellesg, Gellesgen
Western Frisian: Barchjeblom, Bargeblom, Bargesnyl, Earrebarreblom, Earrebarresnyl, Floddermûtse

Synonyms

Acorus adulterinus Garsault
Acorus adulterinus Ludw.
Iris acoriformis Boreau
Iris acoroides Spach
Iris bastardii Boreau
Iris curtopetala F.Delaroche
Iris curtopetala Redouté
Iris flava Tornab.
Iris lutea Lam.
Iris lutea Ludw.
Iris pallidior Hill
Iris paludosa Pers.
Iris palustris Gaterau
Iris palustris Moench
Iris palustris var. pallida Gray
Iris pseudacorus f. albescens Neuman
Iris pseudacorus f. longiacuminata Prodan
Iris pseudacorus f. nyaradyana Prodan
Iris pseudacorus f. submersa Glück
Iris pseudacorus subsp. acoriformis (Boreau) K.Richt.
Iris pseudacorus subsp. bastardii (Boreau) K.Richt.
Iris pseudacorus subvar. aurantiaca Druce
Iris pseudacorus var. acoriformis (Boreau) Nyman
Iris pseudacorus var. acoriformis (Boreau) Baker
Iris pseudacorus var. acoroides (Spach) Baker
Iris pseudacorus var. bastardii (Boreau) Nyman
Iris pseudacorus var. citrina Hook.
Iris pseudacorus var. longifolia DC.
Iris pseudacorus var. ochroleuca Peterm.
Iris pseudacorus var. parviflora Bastard
Iris pseudacorus var. parviflorum Bastard
Iris sativa Mill.
Limnirion pseudacorus (L.) Opiz
Limniris pseudacorus (L.) Fuss
Moraea candolleana Spreng.
Pseudo-iris palustris Medik.
Vieusseuxia iridioides Redouté
Xiphion acoroides (Spach) Alef.
Xiphion pseudacorus (L.) Schrank
Xyridion acoroideum (Spach) Klatt

and 1 more.

Flowers

In flower: May to June (from 6,548 flowering iNaturalist observations worldwide)

Characteristics

Growth habit: Forb/herb
Lifespan: Perennial
In the US and Canada: Canada: introduced, Lower 48 states: introduced

Photos

FlowerPhoto: Анна Рыбакова, CC BY 4.0, from iNaturalist
FlowerPhoto: Julien Renoult, CC BY 4.0, from iNaturalist
FlowerPhoto: Kailey Alderfer, CC BY 4.0, from iNaturalist
FlowerPhoto: Daryl Nolan, CC0, from iNaturalist
Photo: ABesheva, CC BY-SA 4.0, from Wikimedia Commons
Photo: Acabashi, CC BY-SA 4.0, from Wikimedia Commons
Photo: Viacheslav Galievskyi, CC BY-SA 4.0, from Wikimedia Commons
Photo: Liubov Ilminska, CC0, from iNaturalist
Photo: Jac. Janssen from Baarlo lb, NL, CC BY 2.0, from Wikimedia Commons
Photo: Jac. Janssen from Baarlo lb, NL, CC BY 2.0, from Wikimedia Commons
Photo: Rob John, CC BY 4.0, from iNaturalist
Photo: Aragonitmitmalachit, CC BY-SA 4.0, from Wikimedia Commons

More in Iris

Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.