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Ontario Weeds: Foxtail barley
Return to the Ontario Weeds Gallery Excerpt from Publication 505, Ontario Weeds,
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Name: Foxtail barley, Hordeum jubatum
L., | Top of Page |
| Top of Page | Stems & Roots: Stems 20-60cm (8in.-2ft) high, erect or spreading as a bunch grass from a mass of fibrous roots; stems smooth or slightly rough below; leaves bluish-green to grayish-green, 1.5-4mm (1/16-1/6in.) wide, prominently ribbed and rough on the back; leaf sheath split with overlapping margins; ligule very short, less than 1mm (1/25in.) long; auricles usually absent but occasionally 1 or 2 present.Flowers & Fruit: Inflorescence (seed head) a dense, unbranched, barley-like spike, 5-12cm (2-5in.) long, with finely barbed, long, green or purplish awns, erect or nodding slightly to one side; turning yellowish or straw-coloured when mature and breaking apart into separate seed-bearing units; each unit having a very sharp point and 7 long, spreading awns. These may be blown by the wind or carried in animal fur, clothing, etc. Flowers from June to October. Habitat: Foxtail barley is a native grass throughout Canada, chiefly in moist or saline depressions, but it also occurs in cultivated fields, roadsides, waste areas and lawns. Similar Species: Before heading out, it is distinguished by its bluish to grayish-green colour, its split sheath and its short ligule and by the presence of a very short auricle on some plants. After heading out, the dense 1-sided "foxtail" inflorescence with its long, green or purplish awns is unmistakable. Caution: When animals walk through or graze in areas containing mature Foxtail barley or eat hay contaminated with the ripe heads of this weed, the sharp-pointed, bristly segments may get into their hair, mouth, nose or eyes. Because these bristles have tiny, forward-pointing barbs, they will only slide in one direction. Motion of the animal's body forces these sharp-pointed segments deeper into the skin causing skin sores, irritation of back of mouth and nasal passages, and sometimes blindness. | Top of Page | Related Links... on general Weed
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