. Botany; an elementary text for schools. Plants. The shape of many leaves is described in combinations of these terms, as ovate-lanceolate, lanceolate-oblong. 199. The shape of the base and apex of the leaf or leaflet is often characteristic. The base may be rounded (Fig. 124), tapering (Fig. 127), cor- date or heart-shaped (Fig. 139), truncate or squared as if cut off. The apex may be blunt or obtuse, acute or sharp, acum- inate or long-pointed, truncate (Fig. 141). 200 The shape of the mar- gin is also characteristic of each kind of leaf. The mar- gin is entire when it is not indented or cu
. Botany; an elementary text for schools. Plants. The shape of many leaves is described in combinations of these terms, as ovate-lanceolate, lanceolate-oblong. 199. The shape of the base and apex of the leaf or leaflet is often characteristic. The base may be rounded (Fig. 124), tapering (Fig. 127), cor- date or heart-shaped (Fig. 139), truncate or squared as if cut off. The apex may be blunt or obtuse, acute or sharp, acum- inate or long-pointed, truncate (Fig. 141). 200 The shape of the mar- gin is also characteristic of each kind of leaf. The mar- gin is entire when it is not indented or cut in any way (Fig. 137). When not entire, it may be undulate or wavy (Fig. 126), serrate or saw-toothed (Fig. 139), dentate or more coarsely notched (Fig. 124), crenate or round- toothed, lobed, etc. 201. Leaves often differ greatly in form on the same plant. Observe the differ- ent shapes of leaves on the young growths of mulberries and wild grapes; also on vigorous squash and pumpkin vines. In some cases there may be simple and compound leaves on the same plant. This is marked in the so-called Boston ivy or ampelopsis (Fig. 142), a vine which is used to cover brick and stone buildings. Different degrees of compounding, even in the same leaf, may often be found in honey locust and. 134. Two pairs of connate leaves of 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 Bailey, L. H. (Liberty Hyde), 1858-1954. New York, Macmillan Co.
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