. A text-book of botany for secondary schools. Botany. MUSOPHYTES 355 In the Alleghany region and New England the upland forests are very extensive and complicated, grading from the rich flood-plain forests of the lower levels to the strictly xerophytic forests (pines and black oaks) of the higher lev- els, and dominated by various oaks, chestnuts, and hick- ories. The flood-plain forests of New England are not so rich as those of the Alleghany region and the central West, the dominant forms being elm, linden, ash, maple, syca- more, tulip-tree, etc. 215. Tropical forests. — The forests of the
. A text-book of botany for secondary schools. Botany. MUSOPHYTES 355 In the Alleghany region and New England the upland forests are very extensive and complicated, grading from the rich flood-plain forests of the lower levels to the strictly xerophytic forests (pines and black oaks) of the higher lev- els, and dominated by various oaks, chestnuts, and hick- ories. The flood-plain forests of New England are not so rich as those of the Alleghany region and the central West, the dominant forms being elm, linden, ash, maple, syca- more, tulip-tree, etc. 215. Tropical forests. — The forests of the rainy tropics may be regarded as the climax of the world's vegetation (Fig. 319), for the conditions favor con- stant plant activity at the highest possible pressure. Such great forest growths are found within the region of the trade-winds, where there is heavy rainfall, great heat, and very rich soil, as in the East Indies, and along the Amazon and its tributaries. So abundant is the precipitation that the air is often saturated and the plants drip with the moisture. The striking characteris- tics of the great mixed trop- ical forest are as follows: (1) There is no regular period for the development or fall of leaves, and hence there is no time. Fig. 320.—A gutter-pointed leaf of a rainy tropica] forest.—After 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
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