A companion to the United States pharmacopia; . micifuga. years, and therefore this growth is called exogenous, or outward-form-ing or growingy or, as it is characteristic of dicotyledous plants, it is also called dicotyledous growth or struc-ture. The gymno-spermous plantsgrow in the same manner. In Fig. 629 we see a portion ofa rose-twig as it appears duringthe second seasons growth. As the fibro-vascular bundlesgrow wider at the outer side asthe diameter of the stem or rootincreases, they do not always re-main as one bundle, but divideeither during the seasons growth,as illustrated in the s
A companion to the United States pharmacopia; . micifuga. years, and therefore this growth is called exogenous, or outward-form-ing or growingy or, as it is characteristic of dicotyledous plants, it is also called dicotyledous growth or struc-ture. The gymno-spermous plantsgrow in the same manner. In Fig. 629 we see a portion ofa rose-twig as it appears duringthe second seasons growth. As the fibro-vascular bundlesgrow wider at the outer side asthe diameter of the stem or rootincreases, they do not always re-main as one bundle, but divideeither during the seasons growth,as illustrated in the section ofcimicifuga (Fig. 630), or at the beginning of the next season, asdonous btem of three years growth. The upper ° & arrow indicates the cambium, and the lower shown in the diagram of a sectionarrow the medullary sheath. , /T71. nni\ of oak (f lg. 631). As ordinarily a ring of wood is added each year, as the process takes place around the entire circumference of the stem or root, these rings. UNITED STATES PHARMACOPCEIA. 1093
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishernewyo, bookyear1884
