Powder characteristics (1) Cohosh brown. 1 Wood fiber fusiform, with one end thick, one end small, slightly curved, the end acuminate, oblique tip, some round with a dimple or a short divergence on one side, diameter 13-55μm, length 110- 250μm, wall thickness about 4μm, lignan, pit herringbone or cross shape. 2 The main guideline for NASA is the bordered tracheal catheter, which also has a reticulated, ladder-patterned, threaded catheter, 7-100 μm in diameter. 3 wood thin-walled cells like a square or rectangular, slightly thicker wall, pitted dot-like. 4 Epidermal cells yellow-brown. Polygonal surface view, wall thickness 4-15μm, some peripheral wall and peripheral wall of the tumor thickening, burst into the cell. 5 Starch granules are round and oval in shape, with a diameter of 8-20 μm. The umbilical point is obvious and punctate; more complex particles are composed of 2-14 fractions. 6 The plenum sheath is sparsely yellowish green. Shuttle-shaped, acuminate or obliquely apical, 15-35μm in diameter, slightly thicker in wall 4-5μm, ligneous, pits clear, rounded. (2) Northern cohosh is white. 1 The wood fibers are slender or slightly fusiform, with some edges not flat, partially narrowed or swollen, and some are bifurcated at one or both ends, occasionally having 3 bifurcations, diameter 20-56 μm, length 476-680 μm, Wall thickness 5-9μm, woody. 2 The starch granules are clustered into agglomerates, single-grained polygons, diameters of 2-7 μm, and umbilical dots. (3) Off the ephedra white. 1 wood fiber is slender, slightly fusiform or lanceolate, flat, long tip or round blunt, occasional bifurcation, diameter 20-48μm, length 146-408μm, wall thickness 3-7μm, wood Some cells contain brown matter. 2 The plexiform sheath fibers are easy to see, long spindle, with a rounded tip or obtuse tip, 12-24 μm in diameter, 93-180 μm in length, and 3-5 μm in wall thickness, and are lignined, pitted, and pitted. 3 The starch granules are round in shape and have a diameter of 2-24 μm, and the umbilical point is punctate; the complex granules are composed of 2-3 granules. Soft Pvc Anesthesia Mask,Anesthesia Oxygen Mask,Soft Anesthesia Mask,Pvc Anesthesia Mask K-MED Co., Ltd. , https://www.kmedasia.com