. Botany; an elementary text for schools. Plants. morphologically: (1) stamens or pistils may change to petals (Fig. 235); (2) adventitious or (iceessori/ petals ma if arise in the circle of pet- als. Both of these categories may be present in the same flower, as in Figs. 233, 234, and 235. lu the full-double hollyhock, the pet- als derived from the staminal column are shorter and make a rosette in the cen- ter of the flower. Other modifications of flowers are sometimes known as doubling. For ex- ample, double dahlias (Fig. 232), chrysanthemums and sunflowers are forms in which the disk flower
. Botany; an elementary text for schools. Plants. morphologically: (1) stamens or pistils may change to petals (Fig. 235); (2) adventitious or (iceessori/ petals ma if arise in the circle of pet- als. Both of these categories may be present in the same flower, as in Figs. 233, 234, and 235. lu the full-double hollyhock, the pet- als derived from the staminal column are shorter and make a rosette in the cen- ter of the flower. Other modifications of flowers are sometimes known as doubling. For ex- ample, double dahlias (Fig. 232), chrysanthemums and sunflowers are forms in which the disk flowers have developed rays. The snow- ball is another case. In the wild plant (Fig. 236) the ex- tei'iial flowers of the cluster are large and sterile. In t])(^ cultivated plant (Fig. 237) all the flowers have be- come large and sterile. Hy- drangea is a similar case. 236. The wild or original form of the snowball. Outer flowers Review. — How do flowers vary in form? How are the var- ious parts determined iiv disguised flowers? "What are 5-merong and 3-meron3 flowers? What are some of the common forms of gamo- petalous corollas? Describe a labiate flower. Personate. Lily flower. Papilionaceous flower. What are monadelpnous and diadelphous sta- 237. sTiowball, in which nil the flowprs in the clnstor ha'.' hocome larae and 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 Bailey, L. H. (Liberty Hyde), 1858-1954. New York, Macmillan Co.
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