338 FLORIDA GEOLOGICAL SURVEY-THIRD ANNUAL REPORT.
estuarine swamps of the Choctawhatchee and Apalachicola Rivers (and that is very poor peat).
Nearly throughout the Eastern United States between latitudes 3o00 and 430,
Carpinus Caroliniana Walt. Ironwood.
In low hammocks, etc., from Hernando County northward. Occasionally in calcareous swamps with shallow or poor peat, as in Wakulla, Teffersoni and Duval Counties.
Widely distributed in the Eastern United States and southern Canada.
SALICACEAE. Willow Family.
Salix longipes Anders.? Willow.
In swamps and ponds whose water does not flow very swiftly (if at all) or fluctuate much; especially in calcareous regions. Frequent from Wakulla County to the south end of the Everglades, particularly in the Gulf hammock region.
S. nigra Marsh., the common (or black) willow, grows in alluvial swamps in Middle and West Florida, but probably never on peat.
MYRICACEAE. Bayberry Family. Myrica ce-ifera L. Myrtle.
Common nearly throughout the State, in hammocks (especially low hammocks) and in swamps which are rarely or never inundated. It seems to be the commonest woody plant in the middle of the Everglades. Enters very largely into peat formation, but like other woody plants, it does not make the best peat.
Delaware to Texas, in the coastal plain. Also in the West Indies.
Myrica Carolinensis Mill.
In sandy bogs and non-alluvial swamps west of the Tallahassee meridian (perhaps also in a few of the northeastern counties); rather rare. Contributes some to the formation of peat in a tyty swamp near DeFuniak Springs.
Nova Scotia to Lake Erie, northern Florida and eastern Louisiana; almost confined to the glaciated region and coastal plain.
Myrica inodora Bartr.
In about the same habitats as the preceding, from Wakulla County westward; nowhere abundant. Grows on peat in the estuaries of Santa Rosa County and in some tyty bays in Walton and Franklin Counties.
Middle Florida to southeastern Mississippi.
LEITNERIACEAE.
Leitneria Floridana Chapm.
In the Apalachicola estuaries and in a few other damp places in that neighborhood; very rare. Never on good peat.
Known also in a few places in the coastal plain of Missouri and Texas.