Introduction to structural and systematic botany, and vegetable physiology, : being a 5th and revedof the Botanical text-book, illustrated with over thirteen hundred woodcuts . end: sometimes it is small in quantity, so asmerely to flavor the saccharine roots, which are used for food; as inthe Carrot and Parsnip. But in many an alkaloid principle exists,pervading the foliage, stems, and roots, especially the latter, which ren- FIG. 845. Conium maculatum (Poison Hemlock), a portion of the spotted stem, with a leaf;and an umbel -with young fruit. 846. A flowering umbellet. 847. A flower, enlarge
Introduction to structural and systematic botany, and vegetable physiology, : being a 5th and revedof the Botanical text-book, illustrated with over thirteen hundred woodcuts . end: sometimes it is small in quantity, so asmerely to flavor the saccharine roots, which are used for food; as inthe Carrot and Parsnip. But in many an alkaloid principle exists,pervading the foliage, stems, and roots, especially the latter, which ren- FIG. 845. Conium maculatum (Poison Hemlock), a portion of the spotted stem, with a leaf;and an umbel -with young fruit. 846. A flowering umbellet. 847. A flower, enlarged. 848. Thefruit. 849. Cross-section of the same, showing the involute {campylospermous) albumen of thetwo seeds. 850. Longitudinal section of one mericarp, exhibiting the minute embryo near theapex of the albumen. EXOGENOUS OR DICOTYLEDONOUS PLANTS. 42; ders them acrid-narcotic poisons. And, finally, many species ofwarm regions yield odorous gum-resins (such as Galbanum, Assa-fcetida, &c), which have active stimulant properties. The stems ofCelery (Apium graveolens), which are acrid and poisonous whenthe plant grows wild in marshes, &c, are rendered innocent by. cultivation in dry ground, and by blanching. Among the virulentacrid-narcotic species, the most famous are the Hemlock (Coniummaculatum), and Cicuta maculata (Cowbane, Water-Hemlock), indi-genous to this country, the root of which (like that of the C. virosaof Europe) is a deadly poison. A drachm of the fresh root haskilled a boy in less than two hours. 835. Ord. AraliacefE {Ginseng or Ivy Family) scarcely differs from
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Keywords: ., bookauthorgra, bookcentury1800, bookdecade1860, booksubjectbotany
