GEOGRAPHY OF CENTRAL FLORIDA 199

illustrations, which tell many things that cannot be put in words.
 The principal vegetation types seem to be as follows:

 PLACES WITH NO VEGETATION
 These include bodies of water too deep for seeds to germinate in, caves too (lark, small rock outcrops in pine woods swept by fire, beaches continually washed by waves, and roads, fields, and other artificial situations. I
 HERBS PREDOMINATING
 Aquatic vcgeta tion (fig. 35). In the deeper parts of lakes and in sluggish rivers and runs there are quite a number of herbs, either floating free like the water-hyacinth (which however is not native) and water lettuce, or with floati-ng leaves like the water-lilies and bonnets, or all submerged except the flowers (species of .Sdgittaria, Vallisneria, Potamogeton, etc.) or with both leaves and flowers raised above the water (Sagittaria lancifolia, Scirp us, Pountederia, etc.). Such vegetation is found in ftesh water that does not vary too much in level, in all countries that are not too cold or too dry, and consists mostly of nionocotyledons and rather simple dicotyledons. It has much the same aspect in all continents, and the genFig. 35. Marshy margin of Lake Apopka near West Apopka, Lake County, showing water-lilies, wampee (Pontederia), etc. May 20, 1909.


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