BARLERIA, SNAP-DRAGON: A genus of the angiospermia order, belonging to the didynamia class of plants; and in the natural method ranking under the 40th order, Perfinate. The calyx is quadripartite; two of the stamens are much less than the rest; the capsule is quadrangular, bilocular, bivalved, elastic, and without claws; and the seeds are two. There are ten species; all natives of the warm parts of America, and therefore require to be kept in a stove and treated like other tender exotics. They possess no great beauty nor any remarkable property; but are kept for the sake of variety.