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Leaves |
Record 101 to 125 of 268 |
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Leaf Indentations An illustration of a fossil of a toothed fern. Ferns are vascular plants differing from the more primitive lycophytes by having true leaves (megaphylls), and they differ from seed plants (gymnosperms... |
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Leaf Margins "Shapes of margins of leaves. a (1), finely serrate; (2), coarsely serrate; (3), doubly serrate. b (1), finely dentate; (2), sinuate dentate; (3), doubly dentate. c, deeply sinuate. d, wavy. e (1), cr... |
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Leaf Margins "Marginal forms of leaves: a- serrate, or saw-toothed. b- dentate, or toothed. c- crenate, or scalloped. d- repand, undulate, or wavy. e- sinuate. f- incised, cut or jagged." -Foster, 1921 ... |
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Leaf Resin Duct "Resin duct in leaf of Pinus silvestris, in cross section at A, and in longitudinal section at B; h, cavity surrounded by the secreting cells; f, f, sclerenchyma fibers surrounding and protecting the ... |
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Leaf Shapes "General outline of leaves. a, linear; b, lanceolate; c, wedge-shaped; d, spatulate; e, ovate; f, obovate; g, kidney-shaped; h, orbicular; i, elliptical." -Bergen, 1896... |
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Leaf Tips "Tips of leaves. a, acuminate or taper-pointed; b, acute; c, obtuse; d, truncate; e, retuse; f, emarginate or notched; g (end leaflet), obcordate; h, cuspidate, - the point sharp and rigid; i, mucrona... |
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Leaf Tissues, Codonanthe "Cross section of a portion of leaf of Codonanthe, showing the water-storage tissue at f, and the chlorophyll-bearing tissues at e." -Stevens, 1916... |
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Leaf Veins Two examples of leaf venation: left, parallel veining; right, netted veining.... |
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Leaf Veins, Cut "Showing the effect of cutting across the veins on the removal of food from the leaf. A, all of the main veins are cut across near their bases; B, the mid-vein alone has been severed. The stippled are... |
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Leaf, Acerose An acerose, or needle-shaped leaf.... |
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Leaf, Acuminate "Acuminate.--Having an open or awl-shaped point." -Newman, 1850... |
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Leaf, Arrow-Shaped An arrow-shaped leaf.... |
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Leaf, Awl-shaped This is an example of an awl-shaped leaf.... |
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Leaf, Binate "Binate.--With two leaflets." -Newman, 1850... |
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Leaf, Bipinnate "Bipinnate.--Double rows of leaflets." -Newman, 1850... |
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Leaf, Bipinnatifid "Bipinnatifid.--Twice pinnatifid." -Newman, 1850... |
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Leaf, Clasping A clasping leaf around a stem.... |
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Leaf, Cleft This is an example of a pinnately cleft leaf.... |
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Leaf, Cleft This is an example of a palmately cleft leaf.... |
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Leaf, Compound This is an example of a compound leaf. Pinnate leaves have their leaflets arranged along the sides of the main footstalk.... |
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Leaf, Compound This is an example of a compound leaf. Pinnate leaves have their leaflets arranged along the sides of the main footstalk.... |
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Leaf, Compound This is an example of a compound leaf. Pinnate leaves have their leaflets arranged along the sides of the main footstalk.... |
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Leaf, Compound This is an example of a compound leaf. Palmate leaves have their leaflets arranged on the very end of the footstalk.... |
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Leaf, Compound This is an example of a twice-pinnate leaf of the Honey-locust.... |
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Leaf, Compound This is an example of a decompound leaf structure, meaning it is divided three or four times.... |
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