. Carnegie Institution of Washington publication. ROOT SYSTEMS OF MIXED-PRAIRIE SPECIES. 53 figure 22, they are well branched throughout and end in the surface soil. The deeper branches are also wide spreading. Usually the tap dominates through- out. A maximum depth of feet was recorded for one of the plants. Another had a tap-root 5 feet long. While this may appear to be a remarkable growth for an annual, it is no greater than that of many crop plants of similar. Fig. 22.—Widely spreading and deeply penetrating root system of Eriogonum annuum. life duration (c/. Chapters VI and VII). Few
. Carnegie Institution of Washington publication. ROOT SYSTEMS OF MIXED-PRAIRIE SPECIES. 53 figure 22, they are well branched throughout and end in the surface soil. The deeper branches are also wide spreading. Usually the tap dominates through- out. A maximum depth of feet was recorded for one of the plants. Another had a tap-root 5 feet long. While this may appear to be a remarkable growth for an annual, it is no greater than that of many crop plants of similar. Fig. 22.—Widely spreading and deeply penetrating root system of Eriogonum annuum. life duration (c/. Chapters VI and VII). Few or no long branches originate below 3 feet. The tips of the deeper roots are poorly branched. The ulti- mate branches are threadlike. The rootlets of the surface laterals are much finer than those of the deeper ones, in fact, the root as a whole has its surface branches much better developed than the deeper ones, although the tap-root is often more prominent than shown in figure 22. This species with its widely spreading surface laterals and moderate depths of penetration is typical of many sandhills 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
Size: 1563px × 1599px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1920, bookyear1920
