Somme, a medium early-maturing oilseed flax (Linum usitatissimum) with increased yield potential over other medium early cultivars, has been released by the Crop Development Centre, University of Saskatchewan. It is of medium seed size, average oil and protein content and higher oil quality. Somme is resistant to all North American races of rust caused by Melampsora lini and is moderately resistant to wilt caused by Fusarium oxysporum f. sp. lini.Key words: Linum usitatissimum, flax (oilseed), cultivar description