Four other grape varieties are permitted, mostly for historical reasons, as they are rare in current usage. The 2010 version of the appellation regulations lists seven varieties as allowed, Arbane, Chardonnay, Petit Meslier, Pinot blanc, Pinot gris, Pinot Meunier, and Pinot noir. The sparsely cultivated varieties (0.02% of the total vines planted in Champagne) of Arbanne, Petit Meslier, and Pinot blanc can still be found in modern cuvées from a few producers. Previous directives of INAO make conditional allowances according to the complex laws of 1927 and 1929, and plantings made before 1938. Before the 2010 regulations, the complete list of the actual and theoretical varieties also included and Pinot Rosé. The Gamay vines of the region were scheduled to be uprooted by 1942, but due to World War II, this was postponed until 1962, and this variety is no longer allowed in Champagne.