Introduction to structural and systematic botany, and vegetable physiology, : being a 5th and revedof the Botanical text-book, illustrated with over thirteen hundred woodcuts . eral Polygonums (Knot-weed, Smart-weed, Water Pepper, &c.) are acrid or farinaceous seeds of P. Fagopyrum (the Buckwheat) are usedfor food. The roots of most species of Rhubarb are purgative : butit is not yet known what particular species of Tartary yields thegenuine officinal article. The Eriogone^e (a large tribe of thesouthern and Avestern parts of North America, chiefly west of theRocky Mountains) a
Introduction to structural and systematic botany, and vegetable physiology, : being a 5th and revedof the Botanical text-book, illustrated with over thirteen hundred woodcuts . eral Polygonums (Knot-weed, Smart-weed, Water Pepper, &c.) are acrid or farinaceous seeds of P. Fagopyrum (the Buckwheat) are usedfor food. The roots of most species of Rhubarb are purgative : butit is not yet known what particular species of Tartary yields thegenuine officinal article. The Eriogone^e (a large tribe of thesouthern and Avestern parts of North America, chiefly west of theRocky Mountains) are remarkable for their exstipulate leaves andinvolucrate flowers. 898. Ord. LauraceOB {Laurel Family). Trees or shrubs, withpellucid-punctate alternate leaves, their margins entire. Flowerssometimes polygamo-dioecious. Calyx of four to six somewhatunited petaloid sepals, which are imbricated in two series, freefrom the ovary. Stamens definite, but usually more numerous thanthe sepals, inserted on the base of the calyx : anthers two- to four-celled, opening by recurved valves ! Fruit a berry or drupe, thepedicel often thickened. Seed with a large almond-like embryo,. destitute of albumen. — Ex. Laurus, Sassafras, Benzoin. All aro-matic plants, almost every part abounding in warm and stimulant FIG. 1112. A staminate, and 1113, a pistillate flower of Sassafras. 1114. A stamen with itsglands at the base : the anthers opening by two sets of valves. 1115. Pistil; the ovary divid-ed. 1116 Branch in fruit. 1117. Section of the drupe and seed. EXOGENOUS OR DICOTYLEDONOUS PLANTS. 467 volatile oil, to which their qualities are due. Camphor is obtainedfrom Camphora officinarum of Japan, China, &c. Cinnamon is thebark of Cinnamornum Zeylanicum; Cassia bark, of Cinnamomumaromaticum of China. The aromatic bark and wood and the verymucilaginous leaves of our own Sassafras are well known. OurBenzoin odoriferum is the Spice-wood, or Feverbush. Laurusnobilis is the true Laurel, or Sweet Bay. P
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Keywords: ., bookauthorgra, bookcentury1800, bookdecade1860, booksubjectbotany
