Poa annua - blue grass

	DISSEMINATION

Kingdom	Plantae
Sub Kingdom	Tracheobionta (vascular plant)
Superdivision	Spermatophyta (seed plant)
Division	Magnoliophyta (flowering plant)
Class	Liliopsida (monocotyledon)
Order	Cyperales
Family	Poaceae
Genus	*Poa*
Species	*annua*
Classification	L.
Common name	blue grass

Geographic Range	it is native to Eurasia and western North America; it is widespread all over the world.
Physical Characteristics	annual plant, reproducing only by seeds. It grows in dense, from 8 to 30 centimeters high tufts; it often roots at lower nodes. Leaves are bright green, about 7 centimeters long. It flowers form April to June. Each inflorescence produces 80 seeds in average and there may be from 30 to 450 inflorescences in each plant.
Habitat	wetlands, pastures, cultivated fields, roadsides.

Sources
References	USGS - Northern Prairie Wildlife Research Center
Web References	http://www.npwrc.usgs.gov/
Source of the photo	http://www.ipm.ucdavis.edu/PMG/P/W-GM-PANN-MP.001.html