Rhus. Bark of the root Rhus aromatica, Aiton.

1. Transverse section. 2. Longitudinal section. 3. Crystals of phosphates. 4. Crystals of chlorides. 5. Crystals of calcium oxalate.

This image is from Rhus Aromatica, Aiton—Fragrant Sumach. in the May issue of the AJP 1881.