The elements of botany for beginners and for schools . the insertion. Leaves (as already noticed, 54) are inserted in three are Alternate (Fig. 181), that is, one after another, or in other words, withonly a single leaf to each node; Fia. 181. Alternate leaves, in Linden, Lime-tree, or 182, Opposit? leaves, in Red Maple. 68 LEAVES. [SECTION Opposite (Fig. 182), when there is a pair to each node, the two leaves inthis case being always on opposite sides of the stem; Whorled or Vertinllate (Fig. 183) when there are more than two leaveson a node, in which case they di
The elements of botany for beginners and for schools . the insertion. Leaves (as already noticed, 54) are inserted in three are Alternate (Fig. 181), that is, one after another, or in other words, withonly a single leaf to each node; Fia. 181. Alternate leaves, in Linden, Lime-tree, or 182, Opposit? leaves, in Red Maple. 68 LEAVES. [SECTION Opposite (Fig. 182), when there is a pair to each node, the two leaves inthis case being always on opposite sides of the stem; Whorled or Vertinllate (Fig. 183) when there are more than two leaveson a node, in which case they divide the circleequally between them, forming a Verticel or there are three leaves in the whorl, theleaves are one third of the circumference apart;when four, one quarter, and so on. So the plan ofopposite leaves, which is very common, is merelythat of whorled leaves, with the fewest leaves to thewhorl, namely, two. 183. In both modes and in all their modifica-tions, the arrangement is such as to distribute theleaves systematically and in a way to give them agood exposure to the hght,184. No two or more leaves ever grow from the same point. The so-called Fascicled or Clustered leaves arethe leaves of a branch the nodes ofwhich are very close, just as they arein the bud, so keeping the leaves in acluster. This is evident in tlie Larch(Fig. 184), in whi
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1887
