. Fundamentals of botany. Botany. 130 THE VEGETATIVE FUNCTIONS OF PLANTS tion between the curvature and the tip is parallel to the plumb-line. Examination of the ink-marks will show that the zone of curvature is the same as the zone of maximum. Fig. 87.—Positive geotropism in a barrigona palm {Colpotkrinax Wrightii). By some accident the palm, when younger, had been bent over. (Photo by the author.) Fig. 88.—Mullein {Verbascum thapsus) showing geotropic recov- ery of the terminal inflorescence, after having been bent over. growth in length. The stimulus of gravity has modified the distribution
. Fundamentals of botany. Botany. 130 THE VEGETATIVE FUNCTIONS OF PLANTS tion between the curvature and the tip is parallel to the plumb-line. Examination of the ink-marks will show that the zone of curvature is the same as the zone of maximum. Fig. 87.—Positive geotropism in a barrigona palm {Colpotkrinax Wrightii). By some accident the palm, when younger, had been bent over. (Photo by the author.) Fig. 88.—Mullein {Verbascum thapsus) showing geotropic recov- ery of the terminal inflorescence, after having been bent over. growth in length. The stimulus of gravity has modified the distribution of the rate of growth in such a way that the upper side of the sprout has grown more rapidly than the under side. After the sprout has become oriented. 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 Gager, C. Stuart (Charles Stuart), 1872-1943. Philadelphia, P. Blakiston's son & co.
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Keywords: ., bookauthorgag, bookcentury1900, bookdecade1910, booksubjectbotany
