Poaceae

Ripgut brome

Bromus diandrus Roth

Family: Poaceae
Genus: Bromus

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Ripgut brome (Bromus diandrus) — FlowerPhoto: Alice Shanks, CC BY 4.0, from iNaturalist

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Common names

By language (14)

Afrikaans: Predikantsluis, Langnaald-bromus
Arabic: شويعرة ضخمة
arz: شويعره ضخمه
Chinese: 双雄雀麦, 硬雀麥
Croatian: Dvoprašnički ovsik
Dutch: Hoge dravik
English: Ripgut brome, Broncho grass, Giant brome
Estonian: Kahetolmukane luste
German: Grossährige Trespe, Großährige Trespe, Große Trespe
hsb: Wulka kostrjawa
nv: Tłʼoh daʼagizhí
Slovenian: Dolgoresi glistnik
Spanish: Colajaca, Espigona, Espigueta, Hierba espigadera, Pavesa, Yerba espiguera
Ukrainian: Стоколос двотичинковий

Synonyms

Anisantha diandra (Roth) Tutin ex Tzvelev
Anisantha diandra (Roth) Tutin
Anisantha gussonei (Parl.) Nevski
Anisantha macranthera (Hack. ex Trab.) P.Silva
Bromus ambigens Jord.
Bromus asperipes Jord.
Bromus boraei Jord.
Bromus diandrus f. asperipes (Jord.) Soó
Bromus diandrus f. boraei (Jord.) Soó
Bromus diandrus f. glaber (Willk.) Soó
Bromus diandrus f. pilosus (F.Dietr.) Soó
Bromus diandrus f. propendens (Jord.) Soó
Bromus diandrus var. ambigens (Jord.) Asch. & Graebn.
Bromus diandrus var. macrantherus (Hack.) Alcaraz, Garre & Sánchez-Gómez
Bromus gussonei Parl.
Bromus gussonei var. boraei (Jord.) Fouill.
Bromus gussonei var. propendens (Jord.) Fouill.
Bromus macrantherus (Hack. ex Trab.) Henriq.
Bromus maximus subsp. gussonei (Parl.) Douin
Bromus maximus subsp. macrantherus Hack. ex Trab.
Bromus maximus subsp. pilosus (F.Dietr.) K.Richt.
Bromus maximus var. ambigens (Jord.) Nyman
Bromus maximus var. asperipes (Jord.) Nyman
Bromus maximus var. glaber Willk.
Bromus maximus var. gussonei (Parl.) Parl.
Bromus maximus var. macrantherus (Hack. ex Trab.) Hack.
Bromus maximus var. major Gaut.
Bromus maximus var. pilosus (Dieter.) Richt.
Bromus murorum Bernh. ex Roem. & Schult.
Bromus pallens Cav.
Bromus pilosus F.Dietr.
Bromus propendens Jord.
Bromus rigens subsp. macrantherus (Hack. ex Trab.) A.Fern., J.G.García & R.Fern.
Bromus rigens var. gussonei (Parl.) T.Durand & Schinz
Bromus rigidus f. asperipes (Jord.) Maire & Weiller
Bromus rigidus f. propendens (Jord.) Maire & Weiller
Bromus rigidus subsp. ambigens (Jord.) Pignatti
Bromus rigidus subsp. gussonei (Parl.) Maire
Bromus rigidus var. ambigens (Jord.) Maire & Weiller
Bromus rigidus var. gussonei (Parl.) Coss. & Durieu

and 5 more.

Flowers

In flower: March to May, October to November (from 154 flowering iNaturalist observations worldwide)

Characteristics

Growth habit: Graminoid
Lifespan: Annual, Perennial
In the US and Canada: Canada: introduced, Hawaii: introduced, Lower 48 states: introduced

Photos

FlowerPhoto: Alice Shanks, CC BY 4.0, from iNaturalist
FlowerPhoto: lazarus, CC BY 4.0, from iNaturalist
FlowerPhoto: Alice Shanks, CC BY 4.0, from iNaturalist
FlowerPhoto: Peter de Lange, CC0, from iNaturalist
Photo: zebedeugalinha, CC BY 4.0, from iNaturalist
Photo: zebedeugalinha, CC BY 4.0, from iNaturalist
Photo: zebedeugalinha, CC BY 4.0, from iNaturalist
Photo: ashleyrsteel, CC BY 4.0, from iNaturalist
Photo: Nathan May, CC BY 4.0, from iNaturalist
Photo: zebedeugalinha, CC BY 4.0, from iNaturalist
Photo: zebedeugalinha, CC BY 4.0, from iNaturalist
Photo: Adam J. Searcy, CC BY 4.0, from iNaturalist

More in Bromus

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.