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rye brome

Bromus secalinus L.

USDA PLANTS Symbol: BRSE
U.S. Nativity: Exotic
Habit: Herb


Synonym(s): rye brome, bromegrass, cheat, chess, chess brome, ryebrome

Appearance
Bromus secalinus is an annual grass that can grow from 17.7-39.4 in (45-100 cm) tall. It is native to Africa, temperate Asia, and parts of Europe. It has been introduced to Australia, North America, Hawaii, and South America.
Foliage
The erect central culm is unbranched with 4-8 leaves alternate along the its length. The medium green leaf blades are about 0.3 in (7 mm) across and 9 in (23 cm) long.
Flowers
The flower is an open panicle of spikelets up to 7 in (18 cm) long and 4 in (10 cm) across. The branches of the panicle are either bilateral or droop to one side and are organized along the central axis.
Fruit
The seeds are large grains that are linear-oblongoid in shape.
Ecological Threat
B. secalinus is seen invading disturbed areas such as dry prairies, limestone glades, disturbed grassy meadows, vacant lots, abandoned fields, cropland, areas along railroads, and waste areas. It is weedy and aggressive.