. Nature and development of plants. Botany. 2o6 COARSER BROWN ALGAE as a source of potassium (see page 48), from 23 to 48 per cent, of their dry weight being potassium chloride. -It is estimated that there is between 600 and 800 sq. miles of these plants on our Pacific coast and that they should yield annually one million tons of potassium chloride, valued at 40 million dollars. The rock weed or bladder wrack (Fucus) and the gulf weed (Sargassum) are representatives of the second group, Fucaceae, that contain the most specialized of the brown algae (Fig. 121). The Sargassum with its stem and l


. Nature and development of plants. Botany. 2o6 COARSER BROWN ALGAE as a source of potassium (see page 48), from 23 to 48 per cent, of their dry weight being potassium chloride. -It is estimated that there is between 600 and 800 sq. miles of these plants on our Pacific coast and that they should yield annually one million tons of potassium chloride, valued at 40 million dollars. The rock weed or bladder wrack (Fucus) and the gulf weed (Sargassum) are representatives of the second group, Fucaceae, that contain the most specialized of the brown algae (Fig. 121). The Sargassum with its stem and leaf-like organs which may become modified into air sacs and reproductive organs bears the closest external resemblance to the higher plants of any of the algafe (Fig. 121, A). It forms the major portion of that floating. 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 Curtis, Carlton Clarence, 1864-1945. New York, H. Holt


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