. Elements of botany. Botany; Botany. LEAVES. 87 Notice that the leaf is traiversed lengthwise by a strong midrib and that many so-called veins run from this to the margin. Are these veins parallel ? Hold the leaf up toward the light and see how the main veins are connected by smaller veinlets. Examine with your glass the leaf as held to the light and make a careful sketch of portions of one or two veins and the intersecting veinlets. How is the course of the veins shown on the upper surface of the leaf ?. -^-^S^ Fig. 66.— Shapes of Margins of Leaves. a (1), finely serrate; (2), coarsely serra
. Elements of botany. Botany; Botany. LEAVES. 87 Notice that the leaf is traiversed lengthwise by a strong midrib and that many so-called veins run from this to the margin. Are these veins parallel ? Hold the leaf up toward the light and see how the main veins are connected by smaller veinlets. Examine with your glass the leaf as held to the light and make a careful sketch of portions of one or two veins and the intersecting veinlets. How is the course of the veins shown on the upper surface of the leaf ?. -^-^S^ Fig. 66.— Shapes of Margins of Leaves. a (1), finely serrate; (2), coarsely serrate; (3), doubly serrate, b (1), finely dentate; (2), sinuate dentate; (3), d o u 1> 1 y dentate, c, deeply sinuate, d. wavy, e (1), crenate or scalloped; (2), doubly Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bergen, Joseph Y. (Joseph Young), 1851-1917. Boston, Ginn
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1896
