PRELIMINARY REPORT ON PEAT.

HERBS
Tillandsia usneoides (Spanish Dichondra Carolinensis
moss) a Tillandsia sps. (air-plants)
Polypodium polypodioides (a fern) Calophanes sp.
(on trees) Salvia lyrata
MOSSES. ETC
Brachelyma robustum Porella pinnata
Some of these plants are species which seem to be pretty fond of limestone-and there is a little of that in the water of all these streams-but probably none absolutely require it. The above list probably resembles that for the swamps of the upper Apalachicola River more than any other mentioned herein, although the order of relative abundance is somewhat different, and there seem to be a good many more vines in these swamps than in the muddy ones. This similarity of vegetation, like that between the estuaries of the Apalachicola and Suwannee Rivers, already pointed out, seems to indicate once more that the amount of fluctuation of the water-level is more important to some plants than the chemical properties of the soil or water.
The upper St. John's River is also a fluctuating stream with essentially non-calcareous water, but the vegetation bordering it, except where there are swamps fed by seepage from the land, is mostly of the prairie type (i. e., mostly herbs), and it would hardly be proper to correlate it with this. And as it forms no peat it may as well be omitted for the present.

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