|Echinochloa crus-galli (barnyard grass) spikelets with purple stigma|
Echinochloa crus-galli is commonly known as cockspur (or cockspur grass), barnyard millet, Japanese millet, water grass, common barnyard grass, or simply "barnyard grass".
|Echinochloa crus-galli (barnyard grass) with yellowish anthers|
This species is considered one of the world's worst weeds, because it reduces crop yields and causes forage crops to fail by removing up to 80% of the available soil nitrogen.
|Echinochloa crus-galli (barnyard grass), no ligules|
It is an invasive weed in all the states in the continental USA, and is particularly adapted to wet areas such as paddy fields
I found it growing from the side of a stand of Imperata cylindrica (Japanese Blood Grass).
I identified it from the absent ligule and the distinctive inflorescence, including the fact all the spikelets were crowded on only one side of the central axis.
|Echinochloa crus-galli (barnyard grass), with purplish base|
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