A type of grass (Agrostis capillaris) with fine leaves and brownish flower heads, commonly used in lawns and pastures.
From 'brown' plus 'top', literally describing the appearance of the grass flower heads at the top of the plant; also called 'colonial bent' in some regions.
Browntop grass became the gold standard for perfect British lawns and fine golf courses because its dense, fine texture creates that carpet-like appearance people love—and it's so successful that it's become an invasive species in some parts of the world.
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