NOVELTY - Seed of prairie cordgrass cultivar designated 'Savoy', representative seed of the cultivar having been deposited under ATCC Accession Number X1 is new.    USE - The seed and plant are useful for producing a bioenergy feedstock, controlling soil erosion, stabilizing a stream bank, and remediating salt-affected soil (all claimed), and for developing further prairie cordgrass lines and hybrids with desired traits, e.g. has higher mass per tiller, more leaves per tiller, higher shoot height and longer, and wider leaves containing more biomass per leaf.    ADVANTAGE - Novel cultivars of prairie cordgrass capable of growth in a broader geographic region than current commercially available cultivars and that have a higher biomass yield potential than presently available commercial prairie cordgrass cultivars are provided.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are:    (1) a prairie cordgrass plant produced by growing the seed of prairie cordgrass cultivar designated 'Savoy' above;    (2) pollen of the plant of (1);    (3) an ovule of the plant of (1);    (4) tissue culture of the plant of (1);    (5) a plant part from the plant of (1);    (6) a prairie cordgrass plant having all the physiological and morphological characteristics of the prairie cordgrass plant of (1);    (7) a method of producing prairie cordgrass seed by (a) crossing prairie cordgrass cultivar designated 'Savoy' with itself or another prairie cordgrass, where representative seed of the cultivar 'Savoy' having been deposited under ATCC Accession Number X1; and (b) harvesting seed from it;    (8) a method of producing a hybrid prairie cordgrass seed by (a) crossing a first prairie cordgrass plant with a second prairie cordgrass plant, where the first or second prairie cordgrass plant is the prairie cordgrass plant of (1); and (b) harvesting seed from it;    (9) a method of selecting prairie cordgrass by (a) growing more than one plant from the seed prairie cordgrass cultivar designated 'Savoy' above; and (b) selecting one or more plants from step (a);    (10) a bioenergy feedstock produced from the plant of (1) or a part plant;    (11) a biofuel produced from the bioenergy feedstock of (10);    (12) a method of producing a bioenergy feedstock by (a) obtaining biomass derived from the plant of (1); and (b) processing the biomass to produce a bioenergy feedstock;    (13) a method of controlling soil erosion by growing plants from the seed of prairie cordgrass cultivar designated 'Savoy' above under conditions suitable for the resulting plants to control soil erosion;    (14) a method of stabilizing a stream bank by growing plants from the seed of prairie cordgrass cultivar designated 'Savoy' above under conditions suitable for the resulting plants to control soil erosion along the stream bank; and    (15) a method for remediating salt-affected soil by (a) growing plants from the seed of prairie cordgrass cultivar designated 'Savoy' above under conditions sufficient for the resulting plants to absorb salt from the salt-affected soil; and (b) harvesting the plants, thus removing the salt from the soil.