. The origin of floral structures : through insect and other agencies. Plants; Flowers; Flowers. 90 THE STJltrCTURE OF FLOWERS. Naudin, Ph. Van Tieghem, and, I think, English botanists in general.* There are three methods of investigation, â which conjointly may gnide us to the discoveiy of the real nature of the tube. The first is that of following its development; the second is teratological, and the third anatomical. Morphological Investigations.âIn tracing the morpho- logical development of flowers of the Eosacece, where the receptaeular tube is a characteristic feature, one notices how a
. The origin of floral structures : through insect and other agencies. Plants; Flowers; Flowers. 90 THE STJltrCTURE OF FLOWERS. Naudin, Ph. Van Tieghem, and, I think, English botanists in general.* There are three methods of investigation, â which conjointly may gnide us to the discoveiy of the real nature of the tube. The first is that of following its development; the second is teratological, and the third anatomical. Morphological Investigations.âIn tracing the morpho- logical development of flowers of the Eosacece, where the receptaeular tube is a characteristic feature, one notices how a border, surrounding the domelike termination of the axis which soon produces carpellary papillae, rises upwards and elevates the sepals and the papillae of the petals and stamens. This border ultimately forms the tube ; and the question is, whether it should be regarded as the basal part of the calyx or a development from the axis. In the Pomece we find the apocarpous condition of the pistil, characteristic of all the other members of the Bosacece still retained at first; but in consequence of the growth and close proximity of the tube with the carpels, various degrees of adhesion are brought about between them ; thus, in Pyrus (Fig. 22, a), the bases only of the carpels are from the first fused into the axis. In Gotoneasier (b) the fusion Fig. ;,,rj/â¢.; 6, «,«er (after Payer), g^^g^^^ ^^ ^ ^.^^^^ j^^^j on the ovaries. Such " half-inferior" ovaries occur in other genera, as Saxifraga granulata, Gloxinia, etc. From such we pass to completely inferior states, as in Gompositce * Bentham and Hooker describe the inferior ovary of the Pomew in the terms, " Calycia tnbna ovario ;. 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 Henslow, George, 1835-1925. New York
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