June 10, 2015
Apera spica-venti L. Poaceae (Grass family)
Erect winter annual.
Leaves are rolled in the bud, smooth and very narrow. Leaf sheaths are hairless and smooth. Margins of ligules are continuous with the sheath.
Seedlings have a short, pointed membranous ligule that becomes somewhat torn, toothed or jagged with maturity.
Erect, smooth, slender stems can be up to 1.5 feet tall. Produces several tillers.
Flowers and fruit
The seedhead is a long open panicle. Reddish-purple spikelets are compressed and one-seeded. Seeds are tipped with a prominent straight awn. Seeds are wind dispersed and often mature before crop harvest.
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