the Tanner's, or Myrtle-leaved sumach; a genus of the decandra order, belonging to the dieccla clas of plants. There are two species, the myrtifolia and the semina. They are both natives of the south of France, but the former is most commonly cultivated in this country. It is a pretty ornamental plant, with a shrubby, pithy brown stem, closely branching from the bottom, and forms a bushy head three or four feet over, thickly garnished with oblong, pointed, bright green leaves, having small spikes of whitish flowers at the ends of the branches. It is easily propagated by suckers from the root, which it affords plentifully, and may be taken off with fibres every autumn or winter. It may be also propagated by layers in autumn, which will take root in a year. It is much used in the south of France, where it natu- rally grows, for tanning of leather, whence its name of tanner's sumach. It also dyes a beautiful black colour. The berries are dangerous, and when eaten generally occasion vertigoes and epilepsies. The old leaves have the same effect upon cattle that eat them, but the young leaves are innocent.