Ru'bus. 1

A genus of plants (including the blackberry, raspberry, dewberry, etc.) of the Rosaceae. 2. Of the U. S. Ph., the root bark of R. villosus, R. cuneifolius, or R. nigrobaccus. The fluidextract and the syrup of blackberry-root bark are official in the U. S. Ph. R. ide us. 1. Common raspberry, the batos idaia of Dioscorides. The leaves are mildly astringent, and were formerly used medicinally. 2. Of the U. S. Ph., 1890, the fruit of this species, used in the preparation of a refrigerant syrup. R. villosus. Common (or high) blackberry of North America, of which there are two varieties, R. frondosus, in which the fruit is more acid, and a procumbent or trailing variety R. humifusus, which is not easily distinguished from the R. trivial is of Pursh. The root is covered with a thin, brownish bark, which constitutes in part the r. of the U. S. Ph. The bark of the root, the leaves, and the flowers are astringent. [Lat.]