Yarrow (flowering parts) (Achillea Millefolium)Epidermal cells (upper and lower) of leaves tabular with wavy vertical walls. Hair cells simple with one to six basal cells and long apical cell; walls moderately thick, smooth. A few bladdery glandular hairs. Stomata on upper and lower epidermis. Two or three rows of palisade cells. Spongy tissue of spheroidal cells. Parenchyma, bast, tracheids, spiral ducts. Fibers with prismatic crystals of calcium oxalate, from stems, petioles, and veins. Pollen grains characteristic of the order..
Source: Schneider, A. (1921) The Microanalysis of Powdered Vegetable Drugs, 2nd ed. [1]
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Yarrow (Trichome) (Achillea Millefolium)Hair cells simple with one to six basal cells and long apical cell; walls moderately thick, smooth. 400X Acidified chloral Hydrate Soln.
Source: Elan M. Sudberg Alkemists Labs. [2]
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