File:Students' handbook to accompany Plants and their uses (1914) (14594681648).jpg

Identifier: studentshandbook00sarg (find matches)
Title: Students' handbook to accompany Plants and their uses
Year: 1914 (1910s)
Authors: Sargent, Frederick Leroy, 1863-1928
Subjects: Botany
Publisher: New York : Henry Holt
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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Text Appearing Before Image:
ith few spacesbetween the leaves, is called aleaf mosaic. Walls covered withJapanese ivy furnish beautifulexamples of leaf mosaics on alarge scale, and many of OUTcommon house plants illustratethe same phenomenon. In anyleaf mosaic many of the leavesoccupy a very different posi-tion from that which they wouldhave taken if borne on a verticalstem. 73. Climbing into the light. Tins vino iselimbiug on an American )\(ilnv plants, of veiV diverseelm. The height up to the branch / .*. is about 60 feet, and the average cir- families, secure a better expo-sure of the leaves to light byclimbing. The principal typesof climbing plants are four innumber: xminilhrs, like the common climbing roses; rootclimbers, like the poison ivy (fig. 56) and the English ivy(fig. 40); twiners, like the morning-glory; and temlril c/i//tl>ers,like the grapevine. The only way in which one can get athorough knowledge of the behavior of climbers is to watchthem throughout as much as possible of the growing season.
Text Appearing After Image:
FIG. 57. The wild frost grape, atypical tendril climber eiinilVreiiee of the main vine, 3 feet.Redrawn and simplified from a pho-tograph by Robert Ridi^way THE STEM AND THE LEAF 75 The development and mode of operation of tendrils is espe-cially interesting (figs. 58 and 59). The tendril is either aleafless, thread-like branch, as in the grapevine, or a highlymodified leaf or part of a leaf, as in the cucumber. When aliving and active tendril comes into contact with any suitable

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