[SORREL sb.1] The sourwood or elk-tree of North America, Oxydendrum arboreum (Andromeda arborea).

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1687.  Phil. Trans., XLI. 152. The Sorrel-tree bears a Leaf something like a Laurel.

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1717.  Petiveriana, III. 247. Sorrel or Sowre-tree. Because its Leaves have that Taste; some are a Foot diameter.

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1760.  J. Lee, Introd. Bot., App. 317. Sorrel-tree, Andromeda.

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1821.  W. P. C. Barton, Flora N. Amer., I. 107. The sorrel tree itself, however, degenerates into a shrub.

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1866.  Treas. Bot., 472/1. The leaves of Eubotrys arborea have an acid flavour, whence the name of Sorrel-tree.

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