. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. LEPTOSPORANGIATM HETEROSPOREM 431 internodes. At the nodes are borne the various appendages of the stem, and the elongated internodes are, except for occa- sional roots, quite destitute of appendages. Leaves and branches arise from the nodes, and in Marsilia are much crowded. The plants are aquatic or amphibious, and the habit of the plant is very different, especially in Marsilia, as it grows completely submerged, or partially or entirely out of water. Some species, like M. vestita, which gro

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. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. LEPTOSPORANGIATM HETEROSPOREM 431 internodes. At the nodes are borne the various appendages of the stem, and the elongated internodes are, except for occa- sional roots, quite destitute of appendages. Leaves and branches arise from the nodes, and in Marsilia are much crowded. The plants are aquatic or amphibious, and the habit of the plant is very different, especially in Marsilia, as it grows completely submerged, or partially or entirely out of water. Some species, like M. vestita, which grow where there is a. 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 Campbell, Douglas Houghton, 1859-1953. New York, The Macmillan Company;

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Keywords: ., bookauthorcampbelldouglashought, bookcentury1900, bookdecade1910