Populus ni'gra, P. can'dicans, or P. balsamif'era, Populi Gemmae, Balsam Poplar Buds, Balm of Gilead Buds, N.F. The air dried, closed, winter leaf-buds with not more than 10 p.c. of flower buds, yielding not more than 1 p.c. of acid-insoluble ash; United States, Canada. Large tree. Buds conical, pointed, up to 2 Cm. (4/5') long, 2-5 Mm. (1/12-1/5') thick, consisting of closely imbricated scales, brown, glossy, glutinous with fragrant resin; internally with abundant oleoresin and salicin crystals; odor pleasant, balsamic; taste aromatic, bitter; contains volatile oil, resin. Stimulating expectorant, antinephritic, antirheumatic, tonic; bronchitis, nephritis, catarrh, rheumatism; ulcers -- ointment. Dose, gr. 15-30 (1-2 Gm.); 1. Syrupus Pini Albae Compositus, 1 p.c.: Prep.: 1. Syrupus Pini Albae Compositus cum Morphina.