Poaceae
Prairie wedgescale
Sphenopholis obtusata
- Family
- Poaceae
- Genus
- Sphenopholis
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Common names
By language (1)
- English
- Prairie wedgescale, Freeborn
Synonyms
- Agrostis obtusata Steud.
- Aira mexicana Trin. ex E.Fourn.
- Aira obtusa Raf.
- Aira obtusata Michx.
- Aira truncata Muhl.
- Airopsis obtusata (Michx.) Desv.
- Eatonia annua Suksd.
- Eatonia densiflora E.Fourn.
- Eatonia obtusata (Michx.) A.Gray
- Eatonia obtusata var. laxiflora Gatt.
- Eatonia obtusata var. purpurascens Rydb. & Shear
- Eatonia obtusata var. robusta Vasey ex L.H.Dewey
- Eatonia pubescens Scribn. & Merr.
- Eatonia robusta Rydb.
- Festuca obtusata (Michx.) P.Beauv.
- Graphephorum densiflorum E.Fourn.
- Koeleria lobata Steud.
- Koeleria obtusata Trin. ex Steud.
- Koeleria paniculata Nutt.
- Koeleria truncata (Muhl.) Torr.
- Poa obtusata (Michx.) Link
- Reboulea gracilis Kunth
- Reboulea obtusata (Michx.) A.Gray
- Reboulea obtusata var. lobata (Trin.) Farw.
- Reboulea obtusata var. obtusata
- Reboulea obtusata var. pubescens (Scribn. & Merr.) Farw.
- Reboulea truncata Torr. ex Munro
- Sphenopholis annua (Suksd.) A.Heller
- Sphenopholis obtusata f. obtusata
- Sphenopholis obtusata f. purpurascens (Rydb. & Shear) Waterf.
- Sphenopholis obtusata subsp. lobata (Trin.) Scribn.
- Sphenopholis obtusata subsp. pubescens (Scribn. & Merr.) Scribn.
- Sphenopholis obtusata var. lobata Scribn.
- Sphenopholis obtusata var. obtusata
- Sphenopholis obtusata var. pubescens Scribn.
- Sphenopholis pubescens A.Heller
- Sphenopholis robusta (Vasey ex L.H.Dewey) A.Heller
- Trisetum lobatum Trin.
Flowers
- In flower
- March to April, July (from 29 flowering iNaturalist observations worldwide)
- Flower colour
- green (USDA PLANTS Database)
Characteristics
- Growth habit
- Graminoid
- Lifespan
- Annual, Perennial
- In the US and Canada
- Canada: native, Hawaii: introduced, Lower 48 states: native
Photos
FlowerPhoto: Alex Abair, CC BY 4.0, from iNaturalist 
FlowerPhoto: Norma Malinowski, CC BY 4.0, from iNaturalist 
FlowerPhoto: Becky Dill, CC0, from iNaturalist 
Photo: Zihao Wang, CC BY 4.0, from iNaturalist 
Photo: Alex Abair, CC BY 4.0, from Wikimedia Commons 
Photo: aarongunnar, CC BY 4.0, from iNaturalist 
Photo: Alex Abair, CC BY 4.0, from Wikimedia Commons 
Photo: Cleveland Powell, CC BY 4.0, from iNaturalist 
Photo: Alex Abair, CC BY 4.0, from Wikimedia Commons 
Photo: Matt Berger, CC BY 4.0, from iNaturalist 
Photo: Alex Abair, CC BY 4.0, from Wikimedia Commons 
Photo: Daniel Atha, CC0, from iNaturalist
More in Sphenopholis
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.