Popular hybrids include C. Ã -- hiemalis ( C. japonica Ã -- C. sasanqua ) and C. Ã -- williamsii ( C. japonica Ã -- C. salouenensis ) . Popular hybrids include Camellia Ã -- hiemalis C. Ã -- hiemalis ( C. japonica Ã -- C. sasanqua ) and Camellia Ã -- williamsii C. Ã -- williamsii ( C. japonica Ã -- Camellia saluenensis C. saluenensis ) .