. Botany; an elementary text for schools. Plants. 21) Iiiibni rem i iii()ii(F( Kms pi lilt \vi t li stciininate rtoweis borne in the tassel and pistillate tlowers borne in the ear. with these degenerate flowers. Only a few plants bear cleistogamous flowers. Hog- peanut, common blue violet, fringed win- tergreen, and dalibarda are the best subjects in the northern states. Fig. 215 shows a cleistogamous flower of the hog- peanut at a. Above the true roots, slen- der rhizomes bear these flowers, which are provided with a cal^'x and a curving corolla which does not open. Inside are the stamens and
. Botany; an elementary text for schools. Plants. 21) Iiiibni rem i iii()ii(F( Kms pi lilt \vi t li stciininate rtoweis borne in the tassel and pistillate tlowers borne in the ear. with these degenerate flowers. Only a few plants bear cleistogamous flowers. Hog- peanut, common blue violet, fringed win- tergreen, and dalibarda are the best subjects in the northern states. Fig. 215 shows a cleistogamous flower of the hog- peanut at a. Above the true roots, slen- der rhizomes bear these flowers, which are provided with a cal^'x and a curving corolla which does not open. Inside are the stamens and pistils. The pupil must not confound the nodules on the roots of hog-peanut with the cleistogamous flow- ers : these nodules are concerned in the appropriation of food. Late in summer the cleistogamous flowers may be found just underneath the mould. They never rise above ground. The following sum- mer one may flnd a seedling plant with the remains of the old cleistogamous flower still adhering to the root. The hog-peanut is a common low twiner in woods. It also bears racemes of small Cleistogamous flowers usually appear They seem to insure pea-like flowers after the showy flowers have passed a crop of seed by a method which expend little of the plant' energy. See Fig. 216. Review.—"What is fer- tilization ? Pollination? Define cross- and self-pol- lination. Which gives the better results, and how? What is meant by the selective power of the pistil? Describe a receptive pistil. Exhibit one. By what agents is cross-pollination secured? How la pollen discharged? What is meant 215. Hog-peannt, showing a leaf, and a cleistogamous tiower at 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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