Ostrya. Ostrya virginica. Hop-hornbeam. Iron-wood. Lever-wood. N. O. Cupuliferae. (Corylaceae.) Tincture of heart wood.   Clinical.-Headache, dull. Head, numb. Intermittent fever. Liver, affections of. Lumbago. Malaria. Malarial anaemia.   Characteristics.-The