. Lessons in botany. Botany. CHAPTER XLIX. ZONAL DISTRIBUTION OF PLANTS. 473. On the margins of lakes or ponds, where the slope is gradual from the land into the water, one often has an oppor- tunity to study the relation of various plants to different conditions of soil and water. In rowing near the south shore of Lake Cayuga, I have often been impressed with the definite areas occupied by certain plants. Figure 257 is from a photograph, taken from the boat, of the shore distribution of these plants. The most striking feature here is the grouping of certain kinds of plants in definite lines o
. Lessons in botany. Botany. CHAPTER XLIX. ZONAL DISTRIBUTION OF PLANTS. 473. On the margins of lakes or ponds, where the slope is gradual from the land into the water, one often has an oppor- tunity to study the relation of various plants to different conditions of soil and water. In rowing near the south shore of Lake Cayuga, I have often been impressed with the definite areas occupied by certain plants. Figure 257 is from a photograph, taken from the boat, of the shore distribution of these plants. The most striking feature here is the grouping of certain kinds of plants in definite lines or zones. Here the limitations of the zones are quite distinct, so that the transition from one zone to another is quite abrupt, though there is some mixture of the kinds at the zone of transition, or tension line. 474. Zonal arrangement. —This arrangement of plants under such environmental influences is termed '' zonal distribution of plants.'' The slope where this photograph was taken is so 306. Fig. 256. Sagittaria 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 Atkinson, George Francis, 1854-1918. New York, H. Holt and company
Size: 1136px × 2199px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisher, booksubjectbotany
