A GUIDE AND KEY TO AQUATIC PLANTS 109 



13. J. trigonocarpus Steud. — Acid preferring plant, Coastal Plain, 

 Florida to South Carolina and along the Gulf westward at least to 

 Mississippi. 



14. J. acuminaius Michx. — Various provinces, Georgia north and 

 west. Seems to show no particular preference as to acidity. 



15. J. elliottii Chapm. — Coastal Plain, acid swamps or bogs, 

 Florida to North Carolina and westward to the western limit of our 

 territory. 



16. J. debilis A. Gray — Various provinces over most of our territory. 



SMILACACEi^E Smilax family 



1. Smilax [Tourn.] L. 



1. Berries red; leaves not leathery, usually not much 1. S. walteri. 



longer than broad. 

 1. Berries black; leaves leathery, usually much longer 2. S. laurifolia. 



than broad. 



1. S. walteri Pursh. Coral Greenbrier — Vine of pineland ponds and 

 swamps. Coastal Plain over most of our territory. 



2. S. laurifolia L. Bamboo-vine — Non-alluvial, acid swamps, 

 Coastal Plain, Florida northward and westward to the limits of our 

 territory. 



AMARYLLIDACEAE AmaryUis family 



1. Crinum L. 



C. americanum L. — Extreme southern Coastal Plain, Florida west- 

 ward along the Gulf to beyond the limits of our territory. 



2. Hymenocallis L. 



1. Sepals and petals green; stalk terminated by a single 1. H. palmeri. 



flower. 

 1 . Sepals and petals white; stalk terminated by 2 to many 2. 

 flowers. 



2. Stalk terminated by 8-16 flowers; crown small, 2. H. kimballiae. 



2.5-3.5 cm. wide. 

 2. Stalk terminated by 2-8 flowers; crown at least 3. 

 4 cm. wide. 

 3. Filaments arising from a sinus, sometimes very shallow, 4. 

 between the lobes or angles of the crown; filaments 

 not arising from a 2-pronged lobe. 

 3. Filaments arising from a 2-pronged lobe of the crown 3. H. laciniata. 

 with a sinus intervening between filaments. 



4. Edge of crown between the filaments erose 4. H. crassifolia. 



4. Edge of crown between the filaments wath 3, 5. H. tridentata. 

 sometimes 5, teeth. 



1. //. palmeri S. Wats. Alligator Lily — Found only in the Ever- 

 glades region of Florida. 



