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Sedges of Berkshire, Buckinghamshire and Oxfordshire
slender tufted-sedge
Carex acuta, the acute sedge, slender tufted-sedge, or slim sedge, can be found growing on the margins of rivers and lakes in the Palaearctic terrestrial ecoregions in beds of wet, alkaline or slightly acid depressions with mineral soil.
smooth black sedge
Carex nigra (L.) Reichard (syn. C. acuta auct. non L.) is a perennial species of plants in the family Cyperaceae native to wetlands of Europe, western Asia, NW Africa and E North America. Common names include common sedge, black sedge or smooth black sedge. The eastern limit of its range reaches central Siberia, Turkey and probably Caucasus.
