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UMass Extension Weed Herbarium
 

Common Name: annual bluegrass, speargrass, wintergrass
Scientific Name: Poa annua L.
Family Name: Poaceae (Graminae) - Grass Family

Identification Notes:

life cycle - winter annual, reproducing by seed

culms - smooth, dense tufts, spreading, lower nodes often rooting growth habit 1, growth habit 2, growth habit 3, growth habit 4, growth habit 5

leaves - blades smooth, boat-shaped tip, light green, often with short wrinkled segment mid-blade, folded in bud; auricles absent; ligule membranous, white, peaked; sheaths smooth, compressed leaf blade wrinkle

seedheads - panicle, cone-shaped, open, light green to white, branched spikelets seedhead

Images:

Poa annua thumbnail 1 Poa annua thumbnail 2 Poa annua thumbnail 3
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Poa annua thumbnail 3 Poa annua thumbnail 3 Poa annua thumbnail 3 Poa annua thumbnail 4
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