A GUIDE AND KEY TO AQUATIC PLANTS 111 



3. /. hexagona Walt. — Coastal Plain, North Florida to South 

 Carolina. Small has described /. alabamensis from marshes in west 

 Central Alabama which is similar to this. 



4. /. rimilaris Small — Coastal Plain, Northeast Florida to the ad- 

 joining portion of Georgia. 



5. /. albispiritus Small — White species, most common on savannas 

 in th« lower half of the Florida peninsula. 



6. /. savannarum Small — Also an inhabitant of savannas of penin- 

 sular Florida. 



7. /. prismatica Pursh — Marshes and swamps, Coastal Plain, 

 Georgia to the northern hmits of our territory, often in acid situations. 



8. /. versicolor L. — Marshes and swamps in our territory from Georgia 

 west to Mississippi and north to the limit of our range. 



9. /. mrginica L.7— Range similar to the preceding except also 

 known from North Florida. 



HAEMODORACEAE Bloodwort family 



1. Gyrotheca Salisb. 



G. tinctoria (Walt.) Salisb. Paint-root — Acid situations, Coastal 

 Plain, Florida north a ad west to the limits of our territory. 



CANNACEAE Canna family 

 1. Canna L. 



C.flaccida Salisb. Golden Canna — Infrequent plant of swamps and 

 marshes. Coastal Plain, Florida to South Carolina. 



MARANTACEAE Arrowroot family 

 1. Thalia L. 



1. Flowers closely crowded on the stalk; clusters of bracts 1. T. dealbata. 



and bractlets ovoid. 

 1. Flowers separated on the stalk; clusters of bracts and 2. T. geniculata. 



bractlets narrowly conic. 



1. T. dealbata Roscoe — Infrequent in swamps and ponds. Coastal 

 Plain, Florida to South Carolina and along the Gu)f to th*^ western 

 limit of our territory. 



2. T. geniculata L. — Largest-leaved aquatic herb; in fact, the 

 largest-leaved of all native herbs. The plants stand 2 to 3.5 meters 

 high. Its range is restricted to ponds, swamps, and marshes in 

 Florida. 



