Poaceae

Arrowfeather threeawn

Aristida purpurascens Poir.

Family: Poaceae
Genus: Aristida

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Arrowfeather threeawn (Aristida purpurascens) — FruitPhoto: Jay Horn, CC BY 4.0, from iNaturalist

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Common names

By language (2)

arz: اريستيدا بوربوراسينس
English: Arrowfeather threeawn

Synonyms

Aristida affinis (Schult.) Kunth
Aristida elliotiana Steud.
Aristida geyeriana Steud.
Aristida purpurascens var. alabamensis Trin. & Rupr.
Aristida purpurascens var. glaucissima Scribn. & C.R.Ball
Aristida purpurascens var. minor Vasey
Aristida purpurascens var. purpurascens
Aristida purpurascens var. tenuispica (Hitchc.) Allred
Aristida racemosa Muhl.
Aristida tenuispica Hitchc.
Chaetaria affinis Schult.
Chaetaria purpurascens (Poir.) P.Beauv.

Flowers

In flower: September to November (from 12 flowering iNaturalist observations worldwide)

Characteristics

Growth habit: Graminoid
Lifespan: Perennial
In the US and Canada: Canada: native, Lower 48 states: native

Photos

FruitPhoto: Jay Horn, CC BY 4.0, from iNaturalist
FruitPhoto: aarongunnar, CC BY 4.0, from iNaturalist
Photo: Nathan Aaron, CC BY 4.0, from iNaturalist
Photo: Brandon Corder, CC BY 4.0, from iNaturalist
Photo: Scott Ward, CC BY 4.0, from iNaturalist
Photo: Becky Dill, CC0, from iNaturalist
Photo: Anthony A Simmons, CC0, from iNaturalist
Photo: Athena Philips, CC BY 4.0, from iNaturalist
Photo: Will McFarland, CC BY 4.0, from iNaturalist
Photo: aarongunnar, CC BY 4.0, from iNaturalist
Photo: Kristály Cravens-Liszak, CC BY 4.0, from iNaturalist
Photo: Nathan Aaron, CC BY 4.0, from iNaturalist

More in Aristida

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.