. Textbook of botany. Botany. A MOSS 95 P rts dying each year and being pressed and packed down by the eigJit of the younger growing branches above. The dead parts of e moss plants, together with plants of other species growing among em, and fallen leaves, twigs, bark, and the like, undergo changes which result in the formation of beds of peat. Further changes in the peat may m the course of ages lead to the formation of certain kinds coal. Such peat bogs, whose material is steadily heaped up, play a large part in the filling in of swamps as well as of small ponds and lakes. Alany lakes in the
. Textbook of botany. Botany. A MOSS 95 P rts dying each year and being pressed and packed down by the eigJit of the younger growing branches above. The dead parts of e moss plants, together with plants of other species growing among em, and fallen leaves, twigs, bark, and the like, undergo changes which result in the formation of beds of peat. Further changes in the peat may m the course of ages lead to the formation of certain kinds coal. Such peat bogs, whose material is steadily heaped up, play a large part in the filling in of swamps as well as of small ponds and lakes. Alany lakes in the northern United States are thus being gradually filled by the ingrowth of beds of peat mosses from about their borders. In some locations, for example on cliffs and rocky hillsides, clumps of mosses of various kinds catch and hold soil-making materials such as dust and fragments of animal and plant bodies. As parts of the moss plants die and decay, their own substance is added to the collection; in this way, mosses, aided by the decay- producing bacteria, prepare a soil in which larger and more highly developed plants can in time establish themselves. 124. Relationships of the Mosses. — Most closely related to the mosses are the liverworts. Some of these are leafy. Pjq ._ j^ a liverwort (Marchantia). B, part of a liverwort plant, showing the upright branches (6) which bear sex organs (in the case shown, archegones). olants quite similar to the mosses; others are flat, creeping plants which grow on damp earth and rocks (Fig. 49). Liver- worts also have distinct sexual and asexual generations, but the asexual generation of a hverwort is smaller and much. 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 Allen, Charles E. (Charles Elmer), b. 1872; Gilbert, Edward Martinius, joint author. Boston, New York [etc.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1917
