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Grass Gallery
Poaceae, Chloridoideae, Eragrostideae - Tridens
(Family, Subfamily, Tribe)
tribe Eragrostideae
Hairy Woollygrass (Hairy Tridens) Erioneuron pilosum (Tridens pilosus, Uralepis pilosa)
Notice: not in the Tridens Genus
Poor forage for cattle.
Photos taken in Taylor County, Texas, May-November 2004, September 2005
(Native of Texas - Taylor etc.)
Base: perennial, no stolons (runner stem)
Blade (leaf): 1-2mm wide, 2-8cm long, basal, thick, white margins
Sheath (leaf part encircling stem): laterally compressed and keeled
Culm (main grain stem): erect, 10-30cm tall, only one node above base
Inflorescence: up to 12 spikelets tightly clustered at top of culm
Spikelet: 10-16mm long, long silvery hairs
tribe Eragrostideae
White Tridens Tridens albescens
Prefers damp clay soils. Fair forage for cattle.
Photos taken in Taylor County, Texas, July-September 2004, August-September 2007
(Native of Texas - Taylor, Jones, Nolan, Shackelford, Eastland, Runnels, Coleman, Brown)
Base: perennial, knotty base from rhizomes, no stolons (runner stem)
Blade (leaf): various lengths, 1-4mm wide, rolls laterally, tip rolls
Sheath: erect, round or slightly flattened at base, 30-90cm tall, tiny fringed ligule
Culm (main grain stem): erect, 30-90cm tall
Inflorescence: appressed panicle, dense, 8-25cm long, 0.6-1.5cm thick, appressed branches 2-6cm long
Spikelet: 4-10mm long, short pedicle, off white
Glume: translucent, one nerve
Lemma: translucent, tips are notched, occasionally purple tips
tribe Eragrostideae
Slim Tridens Tridens muticus var. muticus
Drought and heat tolerant. grazed by livestock and wild animals. Seed eaten by birds and small mammals.
Photos taken in Taylor County, Texas, July 2007
(Native of Texas - introduced into Taylor County by cultivation)
Base: perennial, no stolons (runner stem)
Blade (leaf): 1-2mm wide, 6-25cm long, fold as they dry
Culm (main grain stem): erect, 20-50cm tall, bearded nodes
Inflorescence: up to 25cm long
Spikelet: 8-13mm long, purple
Glume: thin, unequal in length, less than 5 mm long
tribe Eragrostideae
Rough Tridens Tridens muticus var. elongatus
Photos taken in Taylor County, Texas, June-July 2007
(Native of Texas - Taylor, Shackelford, Runnels, Coleman, Brown)
Base: perennial, no stolons (runner stem)
Blade (leaf): 3-4mm wide, 6-25cm long, fold as they dry
Culm (main grain stem): erect, 40-80cm tall, bearded nodes
Inflorescence: up to 25cm long
Spikelet: 8-13mm long, purple
Glume: firm, unequal in length, 5.5-10 mm long
Other Species In My Area
Lovegrass Tridens Tridens eragrostoides
Open panicle with a few wide spaced branches. Few to many spikelets per branch. Lemmas of spikelets are open. Pedicels slightly longer than spikelet.
(Native of Texas - Taylor)
Purpletop Tridens Tridens flavus var. flavus
Open panicle with a few branches. Lower branches very long with a few short branches, few spikelets. Upper branches shorter and almost appressed.
(Native of Texas - Jones, Callahan, Brown)
Longspike Tridens Tridens strictus
Appressed spike, very small spikelets red/yellow, rhizomes
(Native of Texas - Brown)
Texas Tridens Tridens texanus
Long Branches
(Native of Texas - Brown)
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