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Plains bluestem

Also known as: King Ranch bluestem, KR bluestem, Turkestan bluestem

Bothriochloa ischaemum (L.) Keng

[=Andropogon ischaemum L. ]

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Plains bluestem
Plains bluestem
Plains bluestem inflorescence
Plains bluestem inflorescence
Plains Bluestem

Morphology

Culm
Slender, solid, sometimes decumbent at base, grooved on one side, glabrous to short-hairy at nodes.
Blades
Flat to folded or rolled under, 1/2 to 9 inches long, less than 1/5 inch wide, midrib prominent, rough to thinly hairy, particularly on upper surface near collar.
Sheath
Longer than internodes, slightly keeled, glabrous.
Ligule
Fringed membrane.
Inflorescence
Panicle, digitate (like fingers on a hand), purplish, terminal; inflorescence axis shorter than branches,; branches 2-8, each .8 to 2.8 inches long; rachis and pedicels fringed with silky hairs.
Spikelets
In pairs; one sessile and perfect; one stalked, as large or slightly larger, sterile; awns of fertile lemmas twisted, bent, .4 to .6 inch long.

Ecology

Habitat
Waste ground, roadsides, and pastures; fine-textured, calcareous soils.
Distribution
Scattered throughout Kansas.

Practical Information

Forage Value
Livestock will consume plains bluestem during its early growth stages.
Uses
Plains bluestem has been used for pasture, hay and soil conservation purposes such as bank stabilization.

Additional Notes

Comments

Is very susceptible to leaf rust, which will cause the leaves to wilt and turn a rust color. Plains bluestem is a weedy grass than can crowd out more desirable species.

Synonyms

Alternative scientific names that have been used for this plant.

Scientific Name: Andropogon ischaemum

Full Citation: Andropogon ischaemum L.

Quick Facts
Plant Type
Grass
Family
Poaceae - Grass Family
Life Span
Perennial
Height
14-38 inches
Origin
Introduced
Last Updated
2007-09-30
Flowering Period
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Blooms: July, August, September