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Agrostis exarata Trin.
Spike bentgrass, Spiked bent, Spike red top
Poaceae (Grass Family)
Synonym(s): Agrostis aenea, Agrostis alaskana, Agrostis ampla, Agrostis asperifolia, Agrostis exarata ssp. minor, Agrostis exarata var. minor, Agrostis exarata var. monolepis, Agrostis exarata var. pacifica, Agrostis exarata var. purpurascens, Agrostis longiligula, Agrostis longiligula var. australis, Agrostis melaleuca, Agrostis microphylla var. major
USDA Symbol: AGEX
A tufted grass from 1-4 ft. tall. Culms may be slender to relatively stout and are topped with a seedhead that is usually dense and spikelike but sometimes interrupted and somewhat open. The branches are always strongly erect and green to purplish.
Bloom InformationBloom Color: Yellow
Bloom Time: Apr , May
, WY Canada: AB
, SK Native Distribution: AK
e. to Alt., TX
& Mex.; also locally to the Dakotas & NE Native Habitat:
Moist meadows; canyons
Growing ConditionsWater Use: Medium
Light Requirement: Part Shade
Soil Moisture: Moist
CaCO3 Tolerance: Low
Soil Description: Various moist soils.
Conditions Comments: Not Available
BenefitUse Food: Seeds harvested for food by indigenous peoples.
Larval Host: The Grass Family is an essential larval food for most branded skippers and most of the satyrs.
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Native Seed Network
- Corvallis, OR
Record Last Modified: 2008-10-20
Research By: TWC Staff