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| Plate 57.--Classification: SYSTEM Palustrine, CLASS Emergent Wetland, SUBCLASS Persistent, DOMINANCE TYPE Typha latifolia, WATER REGIME Permanently Flooded, WATER CHEMISTRY Fresh, SPECIAL MODIFIER Impounded. Persistent emergents such as these cattails remain standing at least until the beginning of the next growing season. Note that the adjacent lake is ice-covered at the time of photography. (Knox County, Maine; April 1978; Photo by P. B. Reed) |
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| Plate 58.--Classification: SYSTEM Palustrine, CLASS Emergent Wetland, SUBCLASS Persistent, DOMINANCE TYPE Scirpus robustus--Scirpus acutus, WATER REGIME Semipermanently Flooded, WATER CHEMISTRY Mixosaline, SOIL Mineral. (Stutsman County, North Dakota; August 1962; Photo by R. E. Stewart) |
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| Plate 59.--Classification: SYSTEM Palustrine, CLASS Emergent Wetland, SUBCLASS Persistent, DOMINANCE TYPE Cladium jamaicense, WATER REGIME Semipermanently Flooded, WATER CHEMISTRY Fresh-Circumneutral, SOIL Organic. This photo was taken in the Florida Everglades. (Dade County, Florida; December 1975; Photo by V. Carter) |
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| Plate 60.--Classification: SYSTEM Palustrine, CLASS Emergent Wetland, SUBCLASS Persistent, DOMINANCE TYPE Carex lasiocarpa, WATER REGIME Seasonally Flooded, WATER CHEMISTRY Fresh-Circumneutral, SOIL Organic. Subordinate plants include sedges (Carex lacustris, C. rostrata), water smartweed (Polygonum amphibium), bladderwort (Utricularia macrorhiza), bluejoint (Calamagrostis canadensis), and pondweed (Potamogeton gramineus). (Chippewa National Forest, Beltrami County, Minnesota; June 1972; Photo by J. H. Richmann) |