sentences:  The principal crop plants in Lithuania are rye, wheat, oats, barley, peas, potatoes, sugar beet, and flax.About 46% of the country is covered by cropland.In addition to these major crops, various mushroom species are harvested; several species of berries are harvested, sometimes from the wild; and Common Hawthorn, Thyme, and "Hypericum" are important medicinal species.