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  Indian J Med Microbiol
 

Figure 23: Powder characters. (a) Upper epidermis in surface view; (b) lower epidermis in surface view; (c) fibers containing cluster crystals of calcium oxalate; (d) fragment of collenchyma; (e) cluster crystals of calcium oxalate; (f) starch grains; (g) parenchyma cells containing crystals; (h) spiral vessel; (i) annular vessel; (j) pitted vessel; (k) fragment of trichomes

Figure 23: Powder characters. (a) Upper epidermis in surface view; (b) lower epidermis in surface view; (c) fibers containing cluster crystals of calcium oxalate; (d) fragment of collenchyma; (e) cluster crystals of calcium oxalate; (f) starch grains; (g) parenchyma cells containing crystals; (h) spiral vessel; (i) annular vessel; (j) pitted vessel; (k) fragment of trichomes