Poaceae

Slender woodoats

Chasmanthium laxum (L.) H.O.Yates

Family: Poaceae
Genus: Chasmanthium

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Slender woodoats: Location taken: United States Botanic Garden, Washington D.C.. Names: Chasmanthium laxum (L.) H.O.Yates, Slender Chasmanthium, Slender Woodoats, Spike Uniol Cla — Photo: Photo by David J. Stang, CC BY-SA 4.0, from Wikimedia Commons

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Common names

By language (1)

English: Slender woodoats, Longleaf woodoats

Synonyms

Chasmanthium gracile (Michx.) Link
Chasmanthium laxum subsp. laxum
Chasmanthium laxum subsp. sessiliflorum (Poir.) L.G.Clark
Chasmanthium laxum var. laxum
Chasmanthium laxum var. sessiliflorum (Poir.) Wipff & S.D.Jones
Chasmanthium sessiliflorum (Poir.) Yates
Holcus laxus L.
Poa sessiliflora (Poir.) Kunth
Uniola gracilis Michx.
Uniola laxa Britton, Sterns & Poggenb.
Uniola longifolia Scribn.
Uniola sessiliflora Poir.
Uniola uniflora Benke
Uniola virgata Bartr. ex Schult.

Flowers

Flower colour: green (USDA PLANTS Database)

Characteristics

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

Photos

Photo: Photo by David J. Stang, CC BY-SA 4.0, from Wikimedia Commons
Photo: Douglas Goldman, CC BY-SA 4.0, from Wikimedia Commons
Photo: Douglas Goldman, CC BY-SA 4.0, from Wikimedia Commons
Photo: Douglas Goldman, CC BY-SA 4.0, from Wikimedia Commons
Photo: Douglas Goldman, CC BY-SA 4.0, from Wikimedia Commons

More in Chasmanthium

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.