Figure 4: (a) Powder of root. (b) Micro-measurement of rhomboidal crystal at ×40. (c) Brown content at ×40. (d) Fragment of border-pitted vessel ×40 (unstained and stained with phloroglucinol and hydrochloric acid). (e) Fragment of crystal fiber at ×40. (f) Lignified cork cells in surface view (×40). (g) Lignified fibers passing through medullary rays (×40). (h) Micro-measurement of simple and compound starch grain stained with iodine