Scientific and applied pharmacognosy intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists . s foliage leaves. The latter are usuallyreticulately veined, , the veinings forming a network. The flower-parts are arranged in spirals of 2 to 5, and are usually readily distin-guished from those of the monocotyledons. The roots and stems arecharacterized by a distinct wood and bark being formed by a cambiumand hence the class is sometimes known as Exogens. The studieson this group of plants have been ve
Scientific and applied pharmacognosy intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists . s foliage leaves. The latter are usuallyreticulately veined, , the veinings forming a network. The flower-parts are arranged in spirals of 2 to 5, and are usually readily distin-guished from those of the monocotyledons. The roots and stems arecharacterized by a distinct wood and bark being formed by a cambiumand hence the class is sometimes known as Exogens. The studieson this group of plants have been very extensive and their comparativeanatomy is included in an excellent work on Systematic Anatomyof the Dicotyledons by Hans Solereder, an English translation ofwhich is available. The general outer morphology of the orderscomprising this group are enumerated in Kraemers Applied andEconomic Botany and hence special attention will be given here togeneralizations concerning their inner morphology. While, of course,there are some difficulties in framing hard and fast rules, yet theconsiderations here given will be found very helpful in practice whenidentifying unknown drugs. SALEP 141. Fig. 62.—Salep. A, longitudinal section through the middle of a young tuberousroot or tuber, showing portion of the old tuber (A) and the vascular bundles(Gf) connecting the two tubers, and the following parts of the young tuber;s, b, u, bud scales; w, root; h, root-cap, the whole being developed withinthe tissues of the axis of the mother tuber in a kind of sac (P). B, a pair oftubers, the one on the right being the parent tuber, and that on the left theyoung tuber from which the new plant will be developed in the coming latter shows the remains of the sac-like scale (P) and through whichthe tuber has developed. C, longitudinal section through some of the paren-chyma cells (P) showing the mucilage cells (S) with their small bundles ofraphides. D, a radial vascular bundle showing the alt
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920
