. The elements of structural botany with special reference to the study of Canadian plants ... Plant physiology; Plant anatomy. TTIT! FRUIT. 143. Fig. 200. ]iard-wallod woody cells closely packed together. That prickles are really tricliomes is shown by the fact that when the bark is stripped off they come away along with it. Spines, on the other hand (Fig. 200), are lateral outgrowths of the stem. They are, in fact, gener- ally stunted branches, and will be found to spring originally from the axUs of leaves. Occasionally the petiole of a 'leaf is converted into a spine, which then becomes a t
. The elements of structural botany with special reference to the study of Canadian plants ... Plant physiology; Plant anatomy. TTIT! FRUIT. 143. Fig. 200. ]iard-wallod woody cells closely packed together. That prickles are really tricliomes is shown by the fact that when the bark is stripped off they come away along with it. Spines, on the other hand (Fig. 200), are lateral outgrowths of the stem. They are, in fact, gener- ally stunted branches, and will be found to spring originally from the axUs of leaves. Occasionally the petiole of a 'leaf is converted into a spine, which then becomes a true phyllome. Ovules are generally regarded as tricliomes since they arise from the inner surface of the carpels. 228. The Fruit. In coming to the consideration of the fruit, you must for the present lay aside any popular ideas you may have acquired as to the meaning of this tenn. You â will find that, in a strict botanical sense, many things are fruits which, in the language of common life, are not so designated. For instance, we hardly speak of a pumpkin or a cucumber as fruit, and yet they are clearly so, according to the botanist's definition of that term. A fruit may be defined to be the ripened pistil together tvith any other organ, such as the calyx or receptacle, which may be adherent to it. This definition will, perhaps, be more clearly understood after a few speci- mens have been attentively examined. 229. For an example of the simplest kind of fruit let .Fig. 199. ^Prickles of Sweet Brier. Fig. 200.âSpines of the 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 Spotton, Henry Byron, 1844-. Toronto, W. J. Gage & Co
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