A fen is a type of wetland fed by surface and/or groundwater. The flora of fens is characterized by their water chemistry. Fens are often confused with bogs, which are fed primarily by rainwater and often inhabited by certain sphagnum moss, making them acidic. The characteristics of a fen Fens are characterize by their flora, which can include both Sphagnum mosses when pH is low and surface water dominates, or brown mosses when groundwater dominates. Linguistic issues Derivation The word fen is derived from Old English (fenn) and considered to have proto-Germanic origins, since it has cognates in Gothic (fani), Old Frisian (fenne), Dutch (veen) and German (Fenn(e), Venn; especially in the "Low German" language area: Vehn, Feen). In medieval Swiss German, gfenn. Latin and place names In n

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