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(), n.[OE. mersch, AS. mersc, fr. mere lake. See Mere pool, and cf. Marish, Morass.] A tract of soft wet land, commonly covered partially or wholly with water; a fen; a swamp; a morass. [Written also marish.] Marsh asphodel (Bot.), a plant (Nartheeium ossifragum) with linear equitant leaves, and a raceme of small white flowers; -- called also bog asphodel. Marsh cinquefoil (Bot.), a plant (Potentilla palustris) having purple flowers, and found growing in marshy places; marsh five-finger. Marsh elder. (Bot.) (a) The guelder-rose or cranberry tree (Viburnum Opulus). (b) In the United States, a composite shrub growing in salt marshes (Iva frutescens). Marsh five-finger. (Bot.) See Marsh cinquefoil (above). Marsh gas. (Chem.) See under Gas. Marsh grass (Bot.), a genus (Spartina) of coarse grasses growing in marshes; -- called also cord grass. The tall S. cynosuroides is not good for hay unless cut very young. The low S. juncea is a common component of salt hay. Marsh harrier (Zo スポンサード リンク
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