. The elements of botany for beginners and for schools. Plants. 82 FLOWERS. [SECTION 8. calyx and corolla. Such are completely furnished with all that belongs to a flower. Regular, when all the parts of each set are alike in shape and size. Symmetrical, when there is an equal number of parts in each set or circle of organs. 240. Flax-flowers were taken for a pattern in Section II. 16. But in them the live pistils have their ovaries as it were consolidated into one body. Sedum, Fig. 222, has the pistils and all the other parts free from such combination. The flower is perfect, complete, regular
. The elements of botany for beginners and for schools. Plants. 82 FLOWERS. [SECTION 8. calyx and corolla. Such are completely furnished with all that belongs to a flower. Regular, when all the parts of each set are alike in shape and size. Symmetrical, when there is an equal number of parts in each set or circle of organs. 240. Flax-flowers were taken for a pattern in Section II. 16. But in them the live pistils have their ovaries as it were consolidated into one body. Sedum, Fig. 222, has the pistils and all the other parts free from such combination. The flower is perfect, complete, regular, and symmetrical, but is not quite as simple as it might be ; for there are twice as many stamens as there are of the other organs. Crassula, a relative of Sedum, cultivated in the conservatories for winter blossoming (Fig. 224) is simpler, being isostemonous, or with just as many stamens as petals or sepals, while Sedum is diplostemonous, having double that number: it has, indeed, two sets of stamens. 241. Numerical Plan. A certain number either runs through the flower or is discernible in some of its parts. This number is most commonly either five or three, not very rarely four, occasionally two. Thus the ground-plan, of the flowers thus far used for illus- tration is five. That of Trillium (Fig. 226, 227) is three, as it likewise is as really, if not as plainly, in Tulips and Lilies, Crocus, Iris, and all that class of blossoms. In some Sedums all the flowers are in fours. In others the first flowers are on the plan of five, the rest mostly on the plan of four, that is, with four sepals, four petals, eight stamens (i. e. twice four), and four pis- tils. Whatever the ground number may be, it runs through the whole in symmet- rical blossoms. 227 226 242. Alternation of the successive Circles. In these flowers the parts of the successive circles alternate; and such is the rule. That is,. 225. Please note that these images are extracted from scanned page images that may have be
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectplants, bookyear1887
