BUPLEURUM, HARE'S-EAR, or thorough-wax; a genus of the digynia order, belonging to the pentandria class of plants. There are 17 species, of which only the following is remarkable, viz. the fruticosum, or shrubby Ethiopian hartwort. This rises with a shrubby stem, dividing into numerous branches, forming a bushy head five or six feet high, adorned with oblong, oval, entire leaves of a pale green colour, placed alternate, with yellow flowers in umbels at the ends of the branches, which appear in July and August, and are sometimes succeeded by ripe seeds. It may be propagated by cuttings.