. A text-book of botany for secondary schools. Botany. 1S4 A TKXT-B(M)K OF T'.dTANY (5) Appearance of leaves.—Among the Bryophytes very simple leaves are developed by the gametophyte, and the mosses produce leaves upon an erect stem. (6) Many-celled sex-organs.—The many-celled antheridia and flask-shaped archegonia are very characteristic of Bryo- phytes, and distinguish even the thallose forms from any Thallophytes. 107. General characters of Ferns.—The ferns are well- known plants, and the ordinary forms are easily recognized. Fig. 176.—Shield fern-;. (Fig. 176). In fact, the general appeara
. A text-book of botany for secondary schools. Botany. 1S4 A TKXT-B(M)K OF T'.dTANY (5) Appearance of leaves.—Among the Bryophytes very simple leaves are developed by the gametophyte, and the mosses produce leaves upon an erect stem. (6) Many-celled sex-organs.—The many-celled antheridia and flask-shaped archegonia are very characteristic of Bryo- phytes, and distinguish even the thallose forms from any Thallophytes. 107. General characters of Ferns.—The ferns are well- known plants, and the ordinary forms are easily recognized. Fig. 176.—Shield fern-;. (Fig. 176). In fact, the general appearance of the large compound leaves is so characteristic that when a leaf is said to be fern-like a particular appearance is suggested. Al-. 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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