. Outlines of botany for the high school laboratory and classroom (based on Gray's Lessons in botany) Prepared at the request of the Botanical Dept. of Harvard University. Botany; Botany. 65. Floating leaves: a, ol the Water Shield; J(, o£ the Water Lily. lunning to the center, as in the Water Shield (Fig. 65, a). In this case, the form is said to be j^eltate. Or tlie circum- ference may be interrupted by a cleft, or sinus, leading to the summit of the petiole (^ the Water Lily, Fig. 65, b). The point of attachment of blade and petiole is the real base of the blade. The circle is filled o
. Outlines of botany for the high school laboratory and classroom (based on Gray's Lessons in botany) Prepared at the request of the Botanical Dept. of Harvard University. Botany; Botany. 65. Floating leaves: a, ol the Water Shield; J(, o£ the Water Lily. lunning to the center, as in the Water Shield (Fig. 65, a). In this case, the form is said to be j^eltate. Or tlie circum- ference may be interrupted by a cleft, or sinus, leading to the summit of the petiole (^ the Water Lily, Fig. 65, b). The point of attachment of blade and petiole is the real base of the blade. The circle is filled out, in fact, by the growing backward of the blade at eacli side of the base. This leaf is descrilied as orhicular, and cordate (heart- shaped), or cordate cleft, at the base. 135. We may suppose that the circle is the most advan- tageous foi-m in leaf building, since the parts are equi- distant from the petiole, and thus conduction of food. 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 Leavitt, Robert Greenleaf, 1865-1942; Gray, Asa, 1810-1888. Field, forest, and garden botany. New York, American Book Co
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1901
