. The classification of flowering plants. Plants. 358 FLOWERING PLANTS [CH. as in Bisa, more often large and spreading, as in many species of Odontoglossum, or has upwardly curving sides, as in Cattleya (fig. 171). In Cypripedium {^g. 172) it is slipper-shaped, and in Coryanthes forms a bucket. A spur may or may not be present, and may originate entirely from the lip or partly from the axis. The lip may be variously cut; it is often trifid or tripartite, or the middle segment dividing again, it becomes four-partite (figs. 165,173); or it may be quite simple and similar in form to the lateral p
. The classification of flowering plants. Plants. 358 FLOWERING PLANTS [CH. as in Bisa, more often large and spreading, as in many species of Odontoglossum, or has upwardly curving sides, as in Cattleya (fig. 171). In Cypripedium {^g. 172) it is slipper-shaped, and in Coryanthes forms a bucket. A spur may or may not be present, and may originate entirely from the lip or partly from the axis. The lip may be variously cut; it is often trifid or tripartite, or the middle segment dividing again, it becomes four-partite (figs. 165,173); or it may be quite simple and similar in form to the lateral petals, as in the Australian genus Thelymitra. Darwin's hypothesis^ based on the course of the vascular bundles, that the lip represents the union of the odd petal with. Fig. 171. Flower of Cattleya Bowringiana with lip convolute and concealing the column ; uat. size. From Veitch. the two outer lateral stamens, is, according to Pfitzer^, not con- firmed by study of the floral development. The upper surface generally bears fleshy warts or swellings (calli), which are often ( Oncidium) very large and striking (see figs. 165, 169). In Bulbophylliim harhigericm (fig. 166) it bears numerous long slender hairs, the waving movement of which as well as that of the lip itself renders the flower very conspicuous. Of the stamens the odd member of the outer whorl, oppo- site the odd sepal, is generally fertile (fig. 186, A), but in. 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 Rendle, A. B. (Alfred Barton), 1865-1938. Cambridge, University press
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectplants, bookyear1904
