. Plant studies; an elementary botany. Botany. SHOOTS 79 nation and seed-di»trihufion. It is necessary to call attention to certain pecnliar features of this type of stem. 50. Structures.âThe joints of the stem do not spread apart, so that the peculiar leaves are kept close together, usually forming a rosette-like cluster (see Fig. 71). These leaves are of four kinds : the lowest (outermost) ones (indi- vidually sejiah. collectively calijx) mostly resemble snudl foliage leaves ; the next higher (inner) set (individual]yji9f/ft/,s, collectively corolla) are usually the most ('onspicuous, delic
. Plant studies; an elementary botany. Botany. SHOOTS 79 nation and seed-di»trihufion. It is necessary to call attention to certain pecnliar features of this type of stem. 50. Structures.âThe joints of the stem do not spread apart, so that the peculiar leaves are kept close together, usually forming a rosette-like cluster (see Fig. 71). These leaves are of four kinds : the lowest (outermost) ones (indi- vidually sejiah. collectively calijx) mostly resemble snudl foliage leaves ; the next higher (inner) set (individual]yji9f/ft/,s, collectively corolla) are usually the most ('onspicuous, delicate in textui'c and brightly col- ored ; the third set {stamens) produces the pollen ; the highest (innermost) set {car- pels) form the pistil and pro- duce the ovules, â¢which are to become seeds. These four sets may not all lie present in the same flower ; the members of the same set may be more or less blended with one another, fornung tubes, urns, etc. (see Fitrs. ::), 74) : or the dif- ferent memljers may be modi- fied in the greatest variety of ways. Another peculiarity of this typo of stem is that when the. Fig. 7:3. A trroii]) of rlowerp of tlu- rose family. Tlie one at Hit lojj i I'ulin- t'iUa} three liroael sepals, n:iuch smaller petals alternating ^\â ith them, a group of stamens, and a large receptacle bearing luimer- ous small carpels. The central one {Ak'htmilla) shows the tips of two small sepals, three larger petals united below, stamens arising from the rim of tlieurn, and a single pe- culiar pistil. The lowest flower (the common apple) shows the sepals, petals, stamens, and three styles, all arising from the ON'ary part of the pistil.âAfter Focke,. 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 Coulter, John Merle, 1851-1928. New York, D. Appleton and Company
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