. The elements of botany for beginners and for schools. Botany. SECTION 7.] ORDINARY LEAVES. 05. Entire, when tlieir general outline is completely filled out, so that the margin is an even line, without teeth or notches. Serrate, or Saw-toothed, when the margin only is cut into sharp teeth, like those of a saw, and pointing forwards: as in Fig. 142. Dentate, or Toothed, when such teeth point outwards, instead of forwards; as in Fig. 143. Crenate, or Scal- loped, when the teeth are broad and round- ed ; as in Fig. 144. Repand, Undulate, or Wavi/, when the margin of the leaf forms a wavy line, b
. The elements of botany for beginners and for schools. Botany. SECTION 7.] ORDINARY LEAVES. 05. Entire, when tlieir general outline is completely filled out, so that the margin is an even line, without teeth or notches. Serrate, or Saw-toothed, when the margin only is cut into sharp teeth, like those of a saw, and pointing forwards: as in Fig. 142. Dentate, or Toothed, when such teeth point outwards, instead of forwards; as in Fig. 143. Crenate, or Scal- loped, when the teeth are broad and round- ed ; as in Fig. 144. Repand, Undulate, or Wavi/, when the margin of the leaf forms a wavy line, bending slightly in- wards and outwards in succession; as in Fig. 145. Sinuate, when the margin is more strongly sinuous or turned inwards and outwards ; as in Fig. 146. Incised, Cut, or Jagged, when the margin is cut into sharp, deep, and irregular teeth or incisions; as in Fig. 147. Lobed, when deeply cut. Then the pieces are in a general way called Lobes. The number of the lobes is briefly expressed by the phrase two- lobed, three-lobed, five-lobed, manij-lobed, etc., as the case may be. 140. When the depth and character of the lobing needs to be more par- ticularly specified, the following terms are employed, viz.: — Lobed, in a special sense, when the incisions do not extend deeper than about half-way between the margin and the centre of the blade, if so far, and are more or less rounded; as in the leaves of the Post-Oak, Fig. 148, and the Hepatiea, Fig. 152. Cleft, when the incisions extend lialf way down or more, and especially when they are sharp; as in Fig. 149, 153. And the phrases two-cleft, or, in the Latin form, bifd, three-cleft or trifid, four-cleft or quadrifid, five- cleft or quinquefd, etc., or many-cleft, in the Latin form, mtiUifid,— express the number of the Segments, or portions. Parted, when the incisions are stiU deeper, but yet do not quite reach to the midrib or the base of the blade; as in Fig. 150, 154. And the terms two-parted, three-parted, etc.
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Keywords: ., bookpublishernewyorkamericanboo, booksubjectbotany, bookyear1887
