. Class-book of botany [microform] : being outlines of the structure, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. 28 THE ROOT, OR DESCENDING AXIS. :l! 135. The cirrhous roots of certain climbing vines (Euro- pean ivy, poison ivy, trumpet- creeper) put forth in great numbers from the stem, serv- ing for its mechanical support and no other known use. Again, 136. The fulcra of certain endogenous plants originate high up the stem, and descend- ing obliquely, enter the soil. Of thi
. Class-book of botany [microform] : being outlines of the structure, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. 28 THE ROOT, OR DESCENDING AXIS. :l! 135. The cirrhous roots of certain climbing vines (Euro- pean ivy, poison ivy, trumpet- creeper) put forth in great numbers from the stem, serv- ing for its mechanical support and no other known use. Again, 136. The fulcra of certain endogenous plants originate high up the stem, and descend- ing obliquely, enter the soil. Of this kind are the roots of the screw-pine (Panda- nus) of the conservatories, which are often several feet in length before reaching the ground. The figure represents a screw- pine which was wholly propped up by i-oots of this kiud as if on stilts. Sim- ilar roots occur, in a smaller way, at the lower joints of the Indian corn. 137. The Banyan Tree (Ficus Indica) develops adventitious roots oa a graad scale. When the branches have stretched out so far as to need ad- ditional support, they send fortli adventitious roots, descending to tlie earth. Hav- ing penetrated the soil, these roots supporting columns. The branches. Vx^N^'^s3»c^<-^v^NW C^V r^ 85. Screw-pine (Pandaniis).. 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 Wood, Alphonso, 1810-1881. New York; Chicago : A. S. Barnes; Troy, N. Y. : H. B. Nims
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, booksubjectpl
