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Sporobolus compositus   ( ) Merr.
[=Sporobolus asper  (Michx. ) Kunth]
Riley County, Kansas
Height: 2-4 feet
Family: Poaceae - Grass Family
Flowering Period:   August, September
Also Called: Rough dropseed.
Culms: Erect, simple or branched, solid, glabrous.
Blades: Flat or rolled inward, narrow, 4 to 20 inches long, less than 1/6 inch wide; tips tapered to thread-like points; upper leaves short, lower leaves quite long.
Sheaths: Usually shorter than internodes, open, glabrous or sparsely hairy at throat and each end of collar.
Ligules: Minute fringed membranes.
Inflorescences: Panicles, narrow, 2 to 10 inches long, partially or completely enclosed in upper sheaths, white or pale purple; branches pressed flat against axis.
Spikelets: 1-flowered, to 1/4 inch long; first glume shorter than second glume; tips of lemmas and palea boat-shaped; awns absent.
Habitat: Dry soils of prairies and plains.
Distribution: Throughout Kansas.
Forage Value: Tall dropseed has only fair forage value. Palatability decreases with maturity. It tends to increase in overgrazed bluestem pastures but it decreases in overgrazed short grass prairie.
Comments: Tufted or solitary-stemmed. The name "dropseed" alludes to the grain falling readily. Tall dropseed is fairly drought tolerant. The stems and leaves bleach whitish during the winter.

Tall dropseed
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Riley County, Kansas
Tall dropseed inflorescence
71 KB
Riley County, Kansas
Tall dropseed spikelets
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Riley County, Kansas
Tall dropseed
110 KB
Riley County, Kansas