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Poaceae, also known as the true grasses, is the fourth largest plant family in the world with around 12,000 species and roughly 800 genera. [ 1 ] [ 2 ] They contain, among others, the cereal crop species and other plants of economic importance, such as the bamboos , and several important weeds .
Poaceae at The Plant List; Learn about grasses at The Story of the Poaceae "Grasses" . Encyclopædia Britannica. Vol. XI (9th ed.). 1880. pp. 53– 60. Gramineae Archived 2007-01-03 at the Wayback Machine at The Families of Flowering Plants (DELTA) Archived 2007-01-03 at the Wayback Machine; Poaceae at the Angiosperm Phylogeny Website
Angiospermae; Scientific name Common name Family Conservation status Hardwoods; Aceraceae: maple family; Acer: maples; Acer amplum: broad maple Aceraceae (maple family) : Acer argutum
Three goals of plant taxonomy are the identification, classification and description of plants. The distinction between these three goals is important and often overlooked. Plant identification is a determination of the identity of an unknown plant by comparison with previously collected specimens or with the aid of books or identification manuals.
Their system of botanical taxonomy was based on the principle of natural affinities and is considered as pre-Darwinian as it does not take evolution into account. The Genera plantarum classified an estimated 97,205 species into 202 families and 7,569 genera.
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The Pooideae are the largest subfamily of the grass family Poaceae, with about 4,000 species in 15 tribes and roughly 200 genera.They include some major cereals such as wheat, barley, oat, rye and many lawn and pasture grasses.
"Bluegrass": The seed pods go from green to purplish blue to brown. During the purplish blue phase the seed stems have a navy-blue coating. Poa trivialis (rough meadow-grass), showing the ligule structure