Poaceae

Mt. Washington bluegrass

Poa laxa Haenke

Family: Poaceae
Genus: Poa

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Mt. Washington bluegrass (Poa laxa) — Photo: Yves Bas, CC BY 4.0, from iNaturalist

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Common names

By language (1)

English: Mt. Washington bluegrass

Synonyms

Poa coarctata Kit. ex Steud.
Poa crispa Link
Poa elegans DC.
Poa insolita Nyár.
Poa laxa f. racemosa (Schur) Ghisa & Beldie
Poa laxa subsp. zollikoferi (Acht.) Kožuharov
Poa laxa var. caesioglauca Nyár.
Poa laxa var. conferta Bouvier
Poa laxa var. elatior Mutel
Poa laxa var. flavescens Hausm.
Poa laxa var. pallescens W.D.J.Koch
Poa laxa var. pauciflora Bouvier
Poa laxa var. scabrida Legrand
Poa laxa var. zollikoferi Acht.
Poa mataniae Nyár.
Poa rigidula Simonk. ex Nannf.
Poa simplex Schur
Poa supina var. racemosa Schur
Poa supina var. rigidula Schur

Characteristics

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

Photos

Photo: Yves Bas, CC BY 4.0, from iNaturalist
Photo: Jerzy Opioła, CC BY-SA 3.0, from Wikimedia Commons
Photo: Alessia Guggisberg, CC BY-SA 4.0, from iNaturalist
Photo: Jerzy Opioła, CC BY-SA 3.0, from Wikimedia Commons
Photo: Étienne Léveillé-Bourret, CC BY 4.0, from iNaturalist
Photo: Jerzy Opioła, CC BY-SA 3.0, from Wikimedia Commons
Photo: Antoine MARNAT, CC BY 4.0, from iNaturalist
Photo: Christian Berg, CC BY 4.0, from Wikimedia Commons
Photo: Christian Berg, CC BY 4.0, from iNaturalist
Photo: Christian Berg, CC BY 4.0, from Wikimedia Commons
Photo: Christian Berg, CC BY 4.0, from Wikimedia Commons
Photo: Christian Berg, CC BY 4.0, from Wikimedia Commons

More in Poa

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