. Practical botany. Botany. THE STEM AND THE LEAF 59 light, as they are either narrowed at the base or borne on long leafstalks, so that they do not overlap and shade each other at the bases. The leaves of the century plant are broad at the base, M "'-'â ^ kjM iSii S( Fig. 44. Leaf mosaic ot a begonia The leaves are so disposed that little shading of one leaf by another occurs but this portion is pale and much thickened and does hardly any photosynthetic work, serviag rather as a storehouse for plant food. At floweriag time this food is removed, the leaves droop, and after the seeds are r
. Practical botany. Botany. THE STEM AND THE LEAF 59 light, as they are either narrowed at the base or borne on long leafstalks, so that they do not overlap and shade each other at the bases. The leaves of the century plant are broad at the base, M "'-'â ^ kjM iSii S( Fig. 44. Leaf mosaic ot a begonia The leaves are so disposed that little shading of one leaf by another occurs but this portion is pale and much thickened and does hardly any photosynthetic work, serviag rather as a storehouse for plant food. At floweriag time this food is removed, the leaves droop, and after the seeds are ripe the leaves die (Fig. 63).. Fig. 45. Mosaic formed by leaves of unequal size Top view of a branch of deadly nightshade. After Kerner 56. Leaf mosaics. Any combination of leaves, whether found ui rosette plants or on longer stems, in which the space is very fully occupied by leaves, with few spaces horizontally between them, is called a leaf mosaic (Figs. 44 and 45). Walls. 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 Bergen, Joseph Y. (Joseph Young), 1851-1917; Caldwell, Otis William, 1869- joint author. Boston, New York [etc. ] Ginn and company
Size: 2034px × 1228px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisher, booksubjectbotany
