Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.
Search native plant database:
Strickland, Sam C.
Erioneuron pilosum (Buckley) Nash
Hairy Woollygrass, Hairy Tridens
Poaceae (Grass Family)
Synonym(s): Tridens pilosus, Uralepis pilosa
USDA Symbol: ERPI5
USDA Native Status: L48 (N)
Blades: Thick, narrow, flat, glabrous, 2-8 cm. long, 1-2 mm broad. Thick white margin, pointed tip.
Culms: 10-30 cm. tall, typically with only 1 node elevated above the basal clusters of leaves.
Inflorescence: Contracted panicle or raceme mostly 2-3 cm. long and 10-16 cm broad with 4-9 large, pale spikelets.
Fruits: Caryopsis 1.3-1.5 mm. long.
Bloom InformationBloom Color: Brown
Bloom Time: Apr , May , Jun , Jul , Aug , Sep , Oct
, UT Native Distribution:
Abundant in far West Texas and the Edwards plateau on prairies and other disturbed areas. Native Habitat:
Well-drained limestone, sand, caliche in open rangelands, pastures, poor areas.
Growing ConditionsWater Use: Low
Light Requirement: Sun
Soil Moisture: Dry
Drought Tolerance: High
Heat Tolerant: yes
Soil Description: Limestone-based, Sandy Sandy Loam, Medium Loam, Clay Loam Clay
Conditions Comments: Hairy tridens conforms to a short-grass prairie garden. It provides a good matrix in which to establish wildflowers. Winecup, four-nerve daisy, and blue-eyed grass combine well in plantings with hairy tridens because the grass provides an interesting contrast with its texture.
BenefitUse Ornamental: Attractive.
Use Wildlife: Seeds-granivorous birds; Small mammals-nesting material; Poor forage plant for livestock and wildlife.
Use Other: Some value in retarding soil erosion in dry regions subject to occasional heavy rains.
Conspicuous Flowers: yes
Interesting Foliage: yes
Larval Host: The Grass Family is an essential larval food for most branded skippers and most of the satyrs.
Deer Resistant: High
PropagationPropagation Material: Seeds
Seed Treatment: No special pre-treatment.
Commercially Avail: yes
Herbarium Specimen(s)NPSOT 1056
Collected Aug 10, 1995 in Comal County by Mary Beth WhiteNPSOT 0951
Collected Sep 1, 1994 in Bexar County by Harry Cliffe
Wildflower Center Seed BankLBJWC-29
Collected 2006-05-16 in Travis County by Lady Bird Johnson Wildflower Center
Record Last Modified: 2013-08-01
Research By: TWC Staff