Calcium Oxalate Crystals Small 320×191 Medium 640×382 Large 1024×612 Download Tiff Original 2400×1434 | (900.9 KB) Description "Different forms of crystals of calcium oxalate. A, from the petiole of Begonia manicata." -Stevens, 1916 Keywords begonia manicata, calcium oxalate crystals, plant anatomy, plant cells, plant crystal Galleries Cellular Botany Source: William Chase Stevens Plant Anatomy (Philadelphia, PA: P. Blakiston, 1916)