350 
FLORIDA GEOLOGICAL SURVEY—THIRD ANNUAL REPORT. 
Panicum gibbum Ell. 
In swamps of various kinds in Escambia, Santa Rosa and Walton Counties, 
and on shallow margin of Lake Harris near Eldorado, Lake County. Rather 
rare. 
New Jersey and Missouri to Guiana. 
Panicum virgatum L. 
In estuarine marshes of the Escambia and Yellow Rivers, and on the 
borders of the Julington Creek marsh described on page 287. 
Widely distributed in the Eastern United States. 
Panicum verrucosum Muhl. 
In non-alluvial swamps in Escambia and Jackson Counties. 
Massachusetts to Indiana, Florida and Texas, mostly in the coastal plain. 
Panicum erectifolium Nash 
Grassy prairies in Osceola and DeSoto Counties. Also in cypress ponds, etc 
North Carolina to Louisiana, in the coastal plain. Also in western Cuba. 
Panicum hemitomon Schult. (P. digitarioides Carpenter). Maiden Cane- 
Very characteristic of shallow water of lake margins, especially in the lake 
region. Also in other stagnant water, such as cypress ponds and the wetter 
parts of peat prairies; often with Pontederia . Walton, Franklin, Leon, Madison, 
Putnam, St. Johns, Volusia, Lake, Sumter, Polk and Palm Beach Counties. 
Contributes abundantly to the formation of some of our best peat. 
New Jersey to Texas, in the coastal plain. 
Panicum geminatum Forsk. 
In large lakes, sluggish calcareous streams, etc., usually in water a foot or 
more in depth. Citrus, Sumter (pond near Wildwood), Lake (Lakes Griffin, 
Harris and Dora), and Dade (sloughs at south end of the Everglades). 
Florida, Texas, tropical America, Egypt, Asia and Australia. 
Echinochloa Crus-Galli (L.) Beauv.? 
In bayous in the calcareous swamps of Lake Panasoffkee and Helena Run. 
In all temperate and warmer regions of th'e earth, in one form or another. 
Amphicarpon Floridanum Chapm.? 
Dryish peat prairies in Lake and Polk Counties; not common. 
Not known outside of Florida. 
Paspalum mucronatum Muhl. P. fluitans Kunth. 
Floating with water-hyacinths in the Withlacoochee River near Istachatta. 
Virginia to Florida, Illinois and Texas, in the coastal plain. Also in tropical 
America. 
