. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. LIVERWORTS 397 The view of the inside of the body of the liverwort shows that it is built a good deal on the plan of a green leaf. You see the chloroplasts in the cells, more abundant on the upper side. You see a pore in the epidermis which corre- sponds in function to the stomate of a leaf; it admits air which diffuses freely in the air chamber beneath. In the kind of liverwort which is pictured (Marchantia) the air spaces are more prominent than in the l
. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. LIVERWORTS 397 The view of the inside of the body of the liverwort shows that it is built a good deal on the plan of a green leaf. You see the chloroplasts in the cells, more abundant on the upper side. You see a pore in the epidermis which corre- sponds in function to the stomate of a leaf; it admits air which diffuses freely in the air chamber beneath. In the kind of liverwort which is pictured (Marchantia) the air spaces are more prominent than in the leaf, and thin-walled cells containing chlo- rophyll grow up in a peculiar manner from , , r ,1 . Fig. 195.—Two plants of Marchantia. The one tne base 01 trie air at the right bears arcf,egoni0p),ores_ The one at chamber. The Tela- the left bears antheridiophores. Each one bears tions between the air a s!ngle cupule- Seecontot- and the thin-walled cells, however, are just the same as in the leaf. The cells of the upper epidermis of this liver- wort are waterproof, but the cells of the under epidermis are permeable to water. A. Reproduction. — Liverworts reproduce in three ways. The simplest of these ways is by growing in front and dying behind. Since liverworts have the habit of branching frequently, you can see that this process results in the formation of new individuals. You have noted the same process in connection with the growth of underground stems in seed plants. Another way of reproduction is by means of reproductive buds which are often borne in little cup- or crescent-shaped. 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 G. (John Gaylord), b. 1876. New York, American Book Co
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
