240 FLORIDA GEOLOGICAL SURVEY-THIRD ANNUAL REPORT.

SHRUBS AND WOODY VINES

Myrica cerifera (myrtle) Cornus stricta? Decumaria barbara (a vine) Itea Virginica Rhus radicans (poison ivy) Berchemia scandens (rattan vine)

Sabal glabra (palmetto) Cephalanthus cccidentalis (button
bush.)
Rhapidophyllum Hystrix (needle
palm)

HERBS

Tillandsia usneoides (Spanish
moss) (on trees)
Sagittaria natans (submerged or
nearly so)
Cladium effusum (saw-grass) Pontederia cordata (wampee) Senecio lobatus Lemna sp. (duckweed) (floating) Rhynchospora miliacea

Phragmnites communis (reed grass) Sagittaria lancifolia Panicumin geminatum (a grass) Mikania scandens (a vine) Saururus cernuus Iris versicolor (blue flag) Scirpus validus (bulrush) Dryopteris patens? (a fern)

Several of these herbs, such as Pontederia, Cladium, Panicum, Phragmites, Scirpus, and the two Sagittarias, grow right in the water, where it is one to several feet deep, while some of the trees grow out toward the edges of the swamps, on little or no peat; but there are all gradations between in the matter of location.
Peat in such places is usually rather shallow, though Jones, Tharp & Belden, in their soil survey of Jefferson County, (published in 1908 by the U. S. Department of Agriculture), mention the occurrence of several feet of peat along the Wacissa River in the southern or uninhabited part of that county. I have not taken any samples of this kind of peat, but it is probably too full of tree roots and stumps to be worked with profit at present.
A few peat localities with more or less calcareous water, but differing from the above topographically or otherwise, will be described farther on, among the exceptions.