. The classification of flowering plants. Plants. 320 FLOWERING PLANTS [CH. bracteole in the bud, owing to its position between the branch and the main axis. The arrangement of the parts of the flower differs from the typical form of Liliiflorae only in the absence of the inner whorl of stamens. In abnormal flowers of Gladiolus and Iris one or other of the stamens of this whorl is occasionally developed. Both whorls of the perianth are petaloid, and those of the inner series are usually smaller than those of the outer; in Iris. Fig. 152. Plant with flower-shoot of Iris Florentina, reduced. A.
. The classification of flowering plants. Plants. 320 FLOWERING PLANTS [CH. bracteole in the bud, owing to its position between the branch and the main axis. The arrangement of the parts of the flower differs from the typical form of Liliiflorae only in the absence of the inner whorl of stamens. In abnormal flowers of Gladiolus and Iris one or other of the stamens of this whorl is occasionally developed. Both whorls of the perianth are petaloid, and those of the inner series are usually smaller than those of the outer; in Iris. Fig. 152. Plant with flower-shoot of Iris Florentina, reduced. A. Floral dissection shewing ovary cut lengthwise, back view of one petaloid style-arm, and a second (s) in section with the opposite stamen; .r, stigma; about ^ nat. size. B. Transverse section of ovary. G. anther and top of filament; nat. size. C. Seed of I. Pseudacorus cut lengthwise, nat. size. D. Germination of same; c, cotyledon ; I, first foliage-leaf. E. Valve of capsule of I. foetidissima in transverse section bearing two seeds, i nat. size. F. Diagram of a lateral flower of Iris indicating branching in the axil of the two-keeled bracteole. Habit and A and B after Berg and Schmidt. this distinction is very manifest, while in Crocus, Sisyrinchium and others it is not apparent. The perianth passes below into a longer ( Crocus) or shorter, sometimes, as in Iris, into a scarcely perceptible tube. In Gladiolus and allied genera the perianth-tube is bent, and the whole flower tends towards a horizontal position and becomes medianly zygomorphic. The stamens, which are inserted on the perianth opposite the outer. 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
