Annual bluegrass
June 4, 2015
Poa annua L. Poaceae (Grass family)
Life cycle
Clump-forming winter or summer annual.
Leaves
Hairless, soft, light green leaves are folded in the bud and lack auricles. Leaves have linear margins (sides are parallel) and distinctive boat-shaped tips.
Ligule
Slightly pointed membranous ligule.
Stems
Upright, bending, up to 1-foot-tall stems are clump-forming, enlarge by tillering and may root at the lower nodes.
Flowers and fruit
The seedhead is a greenish white open panicle made up of single or paired branches that form a pyramid shape. Each spikelet contains two to six flowers.
Reproduction
Seeds.
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