326 FLORIDA GEOLOGICAL SURVEY—THIRD ANNUAL REPORT. 
PIALORRHAGIDACEAE. 
Myriophyllum sp. 
In the estuaries of the Blackwater and Escambia Rivers, "in Lake Stanley, 
Walton County, and in the Big Spring of Jackson County. (Perhaps more than 
one species). 
Proserpinaca pectinata Lam. 
In the estuaries near Milton, and in wet peat prairies near Rochelle and 
Kissimmee. Also in shallow ponds in various other parts of the state. 
Massachusetts to Texas, in the coastal plain. 
MELASTOMACEAE. 
Rhexia. 
All the species in Florida, 8 or io in number, are bog plants, and at least 
one of them grows in peat prairies. They seem to be rare or wanting in South 
Florida, although the family to which they belong is mainly tropical. 
ONAGRACEAE. Evening-primrose Family. 
Jussiaea Peruviana L. 
In saw-grass marshes, ditches, etc., often where the water is a little calca¬ 
reous. Ranges from Lake County southward 
Introduced from tropical America. 
Jussiaea suffruticosa L. 
In open marshy places near Escambia Bay, between Gaberonne and Bohemia, 
Escambia County. 
Introduced from tropical America. 
Jussiaea leptocarpa Nutt. 
In open marshy or miry places, especially where partly drained or otherwise 
tampered with. Grows among the water-hyacinths in the Withlacoochee River 
near Istachatta. Pretty widely distributed over the State, but not common. 
Probably introduced from tropical America. 
Ludwigia lanceolata Ell. 
Bays, slash-pine bogs, and other sphagnous places; not common. Leon, Wa¬ 
kulla, Jefferson, Levy and Polk Counties. 
North Carolina to Florida, in the coastal plain. 
• •, ’ - > b , : •' /’ 
Ludwigia alata Ell. 
Marshes at the mouths of the Escambia and Blackwater Rivers, and at tne 
south end of Lake Eustis. Probably also in brackish marshes nearer the coast. 
North Carolina to Louisiana and Missouri, in the coastal plain, mostly near 
the coast. 
