A rhizomatous perennial herb of rough grassy places, road verges and field margins, which is resistant to drought and persists on sandy, well-drained soils. Elsewhere it occurs as a casual. Lowland.
B. inermis, which was first cultivated in Britain in 1794, was formerly sown as a fodder grass, but it is now introduced only as a seed contaminant. It has been known in the wild since 1890, and is spreading quickly in some areas on verges and waste ground.
B. inermis subsp. inermis is a Eurosiberian Temperate species; subsp. pumpelliana is native to N. America.
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