AmericanHerbal Pharmacopoeia - herbal-ahp.org

PagePage 4 American Herbal Pharmacopoeia™ • Valerian Root • April 1999 Figure 9 Microscopic images of Valeriana officinalis a. Piliferous layer of the root showing some root hair scars (magnification 400X).b. Root hair (magnification 400X).

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