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Sphenopholis obtusata (Michx.) Scribn.
prairie wedgescale

General Information
Symbol: SPOB
Group: Monocot
Family: Poaceae
Duration: Annual
Growth Habit: Graminoid
Native Status: CAN   N
HI   I
L48   N
Data Source and Documentation
Plants-NRCS Logos
green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   


click on a thumbnail to view an image, or see all the Sphenopholis thumbnails at the Plants Gallery

Robert H. Mohlenbrock. USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln. Provided by USDA NRCS Wetland Science Institute (WSI). Usage Requirements.

Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 1: 244. Provided by Kentucky Native Plant Society. Scanned by Omnitek Inc. Usage Requirements.

Hitchcock, A.S. (rev. A. Chase). 1950. Manual of the grasses of the United States. USDA Miscellaneous Publication No. 200. Washington, DC. 1950. Usage Requirements.

USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. Provided by NRCS National Wetland Team. Usage Requirements.



Symbol Scientific Name
AIOB Aira obtusata Michx.
SPOBL Sphenopholis obtusata (Michx.) Scribn. var. lobata (Trin.) Scribn.
SPOBP Sphenopholis obtusata (Michx.) Scribn. var. pubescens (Scribn. & Merr.) Scribn.


Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Liliopsida – Monocotyledons
Subclass Commelinidae
Order Cyperales
Family Poaceae ⁄ Gramineae – Grass family
Genus Sphenopholis Scribn. – wedgescale
Species Sphenopholis obtusata (Michx.) Scribn. – prairie wedgescale

Subordinate Taxa

This plant has no children

Legal Status

Threatened and Endangered Information:
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete protected plant list for that location.
prairie wedge-grass
Possibly Extirpated
New Hampshire
blunt sphenopholis
New York
prairie wedgegrass
prairie wedgegrass
Rhode Island
prairie wedgegrass
Special Concern
blunt sphenopholis

Wetland Status

Interpreting Wetland Status

Top Level Regions
Hawaii UPL
North America
Arid West FAC
Atlantic and Gulf Coastal Plain FAC
Eastern Mountains and Piedmont FAC
Great Plains FAC
Midwest FAC
Northcentral & Northeast FAC
Western Mountains, Valleys, and Coast FAC



Source Large Mammals Small Mammals Water Birds Terrestrial Birds


Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover