Gray's Lessons in Botany and Vegetable PhysiologyIvison, Blakeman, Taylor & Company, 1869 - 236 páginas |
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Términos y frases comunes
1-celled Achenia albumen anthers apex axillary axils bark base bearing belong blossom botanist Botany bracts branches bristles calyx carbonic acid carpels cells clusters common commonly compound corolla corymbed cotyledons cultivated cymes deciduous downy drupe embryo erect FAMILY filaments flat fleshy Flowers white foliage fruit gardens genus glabrous green hairy heads heart-shaped herbs imbricated inner involucre lanceolate leaf leaflets leafy leaves lengthwise linear lobes many-flowered many-seeded margins Michx naked narrow nearly northward Nutt oblong obovate obtuse opening outer oval ovary ovate ovate-lanceolate ovules palmately panicle Pappus pedicels peduncles perennial petals petiole pinnate pistils placenta plants pods prickly pubescent purple racemes rays receptacle root scales seeds sepals serrate sessile short showy shrubs side simple slender smooth sometimes sort southward species spike spreading stalk stamens stem stigma stipules style summit tapering thick toothed tree tube umbel upper vegetable Virginia whorled wood yellow
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Página 218 - Gyrose: strongly bent to and fro. Habit : the general aspect of a plant, or its mode of growth. Habitat : the situation in which a plant grows in a wild state. Hairs: hair-like projections or appendages of the surface of plants. Hairy : beset with hairs, especially longish ones. Halberd-shaped, or Halberd-headed: see hastate.
Página 54 - Thus, the Washington Elm at Cambridge — a tree of no extraordinary size — was some years ago estimated to produce a crop of seven millions of leaves, exposing a surface of 200,000 square feet, or about five acres, of foliage.
Página 98 - ... gradations, that it is impossible to say where the one ends and the other begins.
Página iii - OTTO — are described. Accordingly, as respects the principles of Botany (including Vegetable Physiology), this work is complete in itself, as a school-book for younger classes, and even for the students of our higher seminaries. For it comprises a pretty full account of the structure, organs, growth, and reproduction of plants...
Página 128 - Stone-fruit ; of which the cherry, plum, and peach (Fig. 285) are familiar examples. In this the outer part of the thickness of the pericarp becomes fleshy, or softens, like a berry, while the inner hardens, like a nut. From the way in which the pistil is constructed...