. Introduction to botany. Botany. ;^^o Introduction to Botany. and that the water thus caught may be retained by the mulch of loose soil at the surface. The success of tree claims in the semi-arid regions of the United States de- pended largely upon the degree of persistence in this mode of treatment. Figure 177 is a drawing from a pho- tograph of a claim which was planted with trees and neg- lected, while Figure 178 shows the result of cultivation in the neighborhood of the neglected claim. In regions where the rains occur frequently during the growing season, though not in sufficient amount
. Introduction to botany. Botany. ;^^o Introduction to Botany. and that the water thus caught may be retained by the mulch of loose soil at the surface. The success of tree claims in the semi-arid regions of the United States de- pended largely upon the degree of persistence in this mode of treatment. Figure 177 is a drawing from a pho- tograph of a claim which was planted with trees and neg- lected, while Figure 178 shows the result of cultivation in the neighborhood of the neglected claim. In regions where the rains occur frequently during the growing season, though not in sufficient amount to produce. Drawing from a photograph of a tree claim in western Kansas that has been properly cultivated. a perennial water supply in the deeper strata of the soil, grasses predominate, while trees, with the exception of those of xerophilous character, such as occur in savannas, are absent. The dry atmosphere and strong winds which are apt to occur in treeless regions are much less inimical to grasses than to trees, because the former keep close to the ground, where the adverse conditions are less pronounced. The character of the soil may also impress its stamp upon the flora of a region. Thus, to take examples from a single genus, CEnothera laciniata occurs in dry sandy soils, CEno- thera rhombipetala is a prairie plant, and Qinothera Mis-. 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 Stevens, William Chase, 1861-. Boston, D. C. Heath & Co.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1902
