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Hordeum jubatum
''Hordeum jubatum'', with common names foxtail barley,〔(【引用サイトリンク】title=USDA GRIN Taxonomy )〕 bobtail barley〔 squirreltail barley,〔 and intermediate barley,〔 is a perennial plant species in the grass family Poaceae. It occurs wild mainly in northern North America and adjacent northeastern Siberia. However, as it escaped often from gardens it can be found worldwide in areas with temperate to warm climates, and is considered a weed in many countries. The species is a polyploid and originated via hybridization of an East Asian ''Hordeum'' species with a close but extinct relative of Californian ''H. brachyantherum''. It is grown as an ornamental plant for its attractive inflorescences and when done flowering for its infructescence.
==Properties==
Foxtail barley (''Hordeum jubatum'') propagates by seed. It is known for its ability to tolerate saline soils but is capable of productive growth on soil types ranging from loamy to clayey soils with pH's of 6.4 to 9.5. The upper limit of soil NaCl for productive growth and development is 1.0%. Foxtail barley is also adapted to a wide range of moisture regimes from dry to wet. Although this species is generally found on moist sites, it can withstand drought-like conditions. It is commonly found in lowland areas with restricted soil drainage, disturbed sites, waste areas and fields. Foxtail barley is a pioneer species or invader in disturbed areas and in areas with high salinity. It is among the first grasses to establish after disturbance and rapidly invades areas exposed by a receding water table.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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