. Plant studies; an elementary botany. Botany. ROOTS 107. food supplies. T h e r G f o r o, p r o - cesses are devel- oped "which pene- trate and aliscirh. The mistletoe and dodder are seed- plants "whieh have t h i s h a Ij it. a n d both have such processes (see Figs. 102, 103). This habit is mncli more extensively devel- oped, however, in a low group of plants known as the fungi. Many of these iiarasitic fungi live upon jilants and animals, common illustrations being the mildews of lilac leaves and many other plants, the rust of wheat, the smut i:if corn, etc. 70. Root structure.
. Plant studies; an elementary botany. Botany. ROOTS 107. food supplies. T h e r G f o r o, p r o - cesses are devel- oped "which pene- trate and aliscirh. The mistletoe and dodder are seed- plants "whieh have t h i s h a Ij it. a n d both have such processes (see Figs. 102, 103). This habit is mncli more extensively devel- oped, however, in a low group of plants known as the fungi. Many of these iiarasitic fungi live upon jilants and animals, common illustrations being the mildews of lilac leaves and many other plants, the rust of wheat, the smut i:if corn, etc. 70. Root structure. —In the lowest groups of plants (alg;e. fungi, and moss-plants) true roots are not formed, but very simple struc- tures, generallv hair- like (see Fig. 104). In fern-plants and seed- plants, however, the root is a complex structure, so different from the root-like pro- FiG. 103. A section eliowing the Ihin^ fonnection between dodder .and a golden rod upon whicli it is trrowing. The penetrating and absorbing organ (//) has passed tlirouLdi the cortex ic). the vascular zone (/_*), and is disorganizing the jjith (i>}.. 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 Coulter, John Merle, 1851-1928. New York, D. Appleton and Company
Size: 1428px × 1749px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1900
