. Science of plant life, a high school botany treating of the plant and its relation to the environment. Botany. Roots and Their Environment 189 Boston ivy, and truippet creeper, develop holdfast roots which help to support the vines on trees, walls, and rocks. By forcing their way into minute pores and crevices, they hold the plant firmly in place. Usually the roots die at the end of the first season, but in the trumpet creeper they are pereimial. In the tropics some of the large climbing plants have holdfast roots by which they attach themselves, and long, cordlike roots that extend downward
. Science of plant life, a high school botany treating of the plant and its relation to the environment. Botany. Roots and Their Environment 189 Boston ivy, and truippet creeper, develop holdfast roots which help to support the vines on trees, walls, and rocks. By forcing their way into minute pores and crevices, they hold the plant firmly in place. Usually the roots die at the end of the first season, but in the trumpet creeper they are pereimial. In the tropics some of the large climbing plants have holdfast roots by which they attach themselves, and long, cordlike roots that extend downward through the air vmtil they strike the soil and become absorbent roots. Epiphytes. A plant that lives perched on another plant is an epiphyte (Greek: epi, upon, and phyton, plant). Mosses and hchens are the most common epiphytes in temperate regions, but in the rainy tropics and along our own Southern coast many flower- ing plants live attached to the branches of trees. They usu- ally have leathery leaves and a low transpiration rate. Many have water-storage tissue in fleshy stems or ia thickened leaves. Others are called tank epiphytes, because they catch water in the axils of the leaves or in pitcher-Hke leaves. Epiphytes cling to the supporting tree by means of roots that act both as hold- fasts and water-absorbing ml J i X 1 Fig. log. Elorida epiphyte (Tillanisia). organs. They do not take ^^ ^^,„^g^ ^^ ^^ b^^^^u^ ^^ p^^^^pp^^ their nourishment from the 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 Transeau, Edgar Nelson, 1875-1960. Yonkers-on-Hudson, N. Y. , World Book Co.
Size: 1280px × 1951px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectbotany, bookyear1921
