JOINTED GOATGRASS
File Size: 53 KB
 
Aegilops cylindrica  Host
Tallgrass Prairie National Preserve, Chase County, Kansas
Annual
Height: 8-30 inches
Family: Poaceae - Grass Family
Flowering Period:   May, June
Culms: Erect or bent abruptly at base, hollow, branching at base, glabrous or pubescent.
Blades: Flat, 1 to 5 inches long, less than 1/6 inch wide, rough, glabrous or pubescent.
Sheaths: Open, shorter than internodes, glabrous or fringed on margins to sparsely soft-hairy; auricles inconspicuous.
Ligules: Membranous, very short.
Inflorescences: Spike, 3 to 6 inches long, up to 1/5 inch thick, cylinder-like (round in cross-section); spikelets 5 to 10.
Spikelets: Oblong-cylindric, borne singly, pressed flat against rachis, 2- to 5-flowered; glumes hard, asymmetrical, prominently many-nerved, 1/4 to 1/2 inch long, first glume shorter than second; glumes and lemmas awned, awns on uppermost spikelets 1 to 3 inches long, awns shorter on lower spikelets.
Habitat: Waste areas, disturbed sites, roadsides, and fields.
Distribution: Throughout Kansas.
Origin: This weedy species was introduced from Eurasia and is now widespread in the United States. It is thought to have been introduced via contaminated wheat.
Comments: In the vegetative stage, jointed goatgrass is difficult to distinguish from wheat.

Jointed goatgrass
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Tallgrass Prairie National Preserve, Chase County, Kansas
Jointed goatgrass
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Tallgrass Prairie National Preserve, Chase County, Kansas
Jointed goatgrass
69 KB
Tallgrass Prairie National Preserve, Chase County, Kansas
Jointed goatgrass
86 KB
Tallgrass Prairie National Preserve, Chase County, Kansas
Jointed goatgrass inflorescence
58 KB
Tallgrass Prairie National Preserve, Chase County, Kansas
Jointed goatgrass spikelets
33 KB
Tallgrass Prairie National Preserve, Chase County, Kansas