Such grasses would allow a build up of dead organic matter, which together with the increased growth, would reduce the growth of less vigorous species.
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The subcommunity also has many broad-leaved herbs including Common Knapweed (Centaurea nigra), Tormentil (Potentilla erecta), Devils-bit scabious (Succisa pratensis) and Betony (Stachys officinalis).
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