PRELIMINARY REPORT ON PEAT. 
351 
Andropogon sp. (perhaps several of them). Broom-sedgt. 
Common in dryish peat prairies, etc., in Duval, Putnam, Alachua, Lake, 
Orange, Osceola, Polk and DeSoto Counties. (Most of them bloom in the 
fall, so that I have not been able to identify them). 
Erianthus sp. (perhaps two or three. These, too, bloom in the fall). 
In saw-grass marshes, slash-pine bogs, cypress ponds, etc.; not common. 
Jackson, Leon, Duval, Lake, Orange and Polk Counties. 
HYDROCHARITACEAE. Frog’s-bit Family. 
Limnobium Spongia (Bose.) L. C. Rich. 
In calcareous streams in Jefferson County, and in pools in a non-alluvial 
swamp about two miles south of Leesburg. Doubtless in many other places, 
mostly in permanent water. 
Ontario to Florida and Louisiana, mostly near the coast. 
Vallisneria spiralis L. Eel-grass. 
All submerged but the pistillate flowers, in the St. Johns River near Pa- 
latka (and doubtless many other places), and in Lakes Harris and Apopka. 
Doubtless grows on the outer edge of many peat deposits that are advancing 
into large lakes and estuaries. 
Widely distributed in temperate regions where there are large bodies of 
still fresh (or even slightly brackish) water, as in our glaciated region and 
coastal plain. 
ALI»SMACEAE. Water-plantain Family. 
Sagittaria latifolia Willd. Arrowhead. 
In wet muddy or marly places; not common in Florida. Escambia, Leon, 
Madison, Lake (Helena Run) and Dade (head of Miami River) Counties. 
Widely distributed in temperate North America. 
Sagittaria lancifolia L. Wampee? 
Very characteristic of saw-grass marshes, lake margins, wet prairies, and 
various other kinds of exposed wet places, especially where there is limestone 
in the water or near the surface. Widely distributed over the State, perhaps 
in every county which has considerable areas below the ioo-foot contour. 
Delaware to Central America, usually within 50 miles of the coast. 
Sagittaria natans Mx. 
Chiefly in calcareous springs and streams; all submerged but the flowers. 
Jackson, Wakulla and Citrus Counties. Lee County (Hitchcock). 
South Carolina to Alabama, in the coastal plain. 
