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Poaceae, Pooideae, Triticeae - Wildrye

(Family, Subfamily, Tribe)

Waves of Grain Index - Grass

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tribe Triticeae

Canada Wildrye (Nodding Wildrye) Elymus canadensis

5" long head.  Lemma 12mm long, awns 20mm long curved. 

Photos taken in Taylor County, Texas, July 2007

(Native of Texas - Taylor, Shackelford, Runnels, Brown)

Base: perennial, single or in clumps, no rhizomes, no stolons (runner stem)

Blade (leaf): elongate, 4-12mm wide, on culm

Auricles (ear shaped appendage): at blade sheath junction, slender, fragile

Culm (main grain stem): decumbent at base but reaching 80-150cm tall

Inflorescence: dense, erect or nodding, 8-20cm long

Spikelet: 3-5 flowered

Glume: flat, equal length with awns longer than the body

Lemma: glabrous, 0.8 to over 1cm long to base of awns

Awns: 1.5-5mm long, curving when dry

 


 

     

 

tribe Triticeae

Texas Wildrye Elymus interruptus (Elymus canadensis var. interruptus)

7" long head.  Lemma 10mm long, awns 30mm long nearly straight. 

Photos taken in Taylor County, Texas, July 2004, July 2007

(Native of Texas)

Base: perennial, single or in clumps, no rhizomes, no stolons (runner stem)

Blade (leaf): elongate, 4-12mm wide, on culm

Auricles (ear shaped appendage): at blade sheath junction, slender, fragile

Culm (main grain stem): decumbent at base but reaching 80-150cm tall

Inflorescence: dense, erect or nodding, 8-20cm long

Spikelet: 3-5 flowered

Glume: cylindrical, 15-30mm long, 0.5mm wide at middle, equal length with awns longer than the body

Lemma: glabrous, 8-9mm long to base of awns

Awns: 15-20mm long, straight when dry

 


Other Species In My Area

Squirreltail (Swezey, Western Bottle-brush Grass) Elymus elymoides ssp. brevifolius (Elymus longifolius)

Bunchgrass grows 6"-18" tall, no rhizomes.  Bristly spike, 1"-3" long, often partially covered by sheath.  Awns 1 1/2"-3" long.  Dry heads twist with twisting awns.

(Native of Texas - Taylor, Shackelford, Runnels)

 

Slender Wildrye (Slender Wheatgrass) Elymus trachycaulus

Seed head looks like a stick.  No awns.

(Native of Texas)

 

Virginia Wildrye Elymus virginicus

Erect inflorescence.  Red auricles.  Waxy nodes.

(Native of Texas - Taylor, Brown)

 


Waves of Grain Index - Grass

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