120 PUBLIC HEALTH BULLETIN NO. 286 



MALACEAE Apple famUy 



1. Crataegus L. 



C. aestivalis (Walt.) T. & G. Mayhaw — Ponds and perhaps along 

 streams, Florida to South Carolma and westward beyond the Hmits 

 of our region. In Southwest Georgia it is the dominant species in 

 temporary ponds of solution origin. 



LEGUMINOSAE Pea famHy 



1. Gleditsia L. 



G. aquatica Marsh. Swamp Locust — River-swamps, Florida to 

 South Carolina and westward in the Coastal Plain. Very common in 

 the valley of the Mississippi River. May easily be distinguished from 

 the similar G. tricanthos L. by the oval, single-seeded pod. 



2. Amorpha L. 



A. jruticosa L. Indigo-bush — Common in swamps in non-acid 

 regions, ranging over all of our territory. A glabrous species, A. 

 nitens F. E. Boynton, has been described from swamps near Waynes- 

 boro, Georgia, and a few of the other species of Amorpha may occasion- 

 ally grow in wet places. 



POLYGALACEAE MUkwort famUy 



1. Polygala L. 



1. Flower clusters compound; that is, made up of several 



clusters 2. 



1 . Flowers in a single terminal cluster 4. 



2, Flowers yellow 3. 



2. Flowers white 1. P. baldwini. 



3. Capsule round, seed about 0.5 mm. long 2. P. ramosa. 



3. Capsule 2-lobed, seed about 1 mm. long 3. P. cymosa. 



4. Flowers brilliant orange 4. P. lutea. 



4. Flowers lemon-yellow 5. P. rugelii. 



1. P. haldwini Nutt. — Low pin elands and acid pineland swamps, 

 Coastal Plain, Florida to Georgia and Mississippi. This and the four 

 following species are listed under the genus Pilostaxis by Small. 



2. P. ramosa Ell. — Situations similar to the above, but more wide- 

 spread, ranging north and west in the Coastal Plain to beyond the 

 limits of our territory. 



3. P. cymosa Walt. — More truly aquatic than the preceding two or 

 the following species. Found in acid cypress ponds and pineland 

 pools over all of our Coastal Plam territory. 



4. P. lutea L. — Acid moist places. Coastal Plain, Florida north and 

 west to beyond the limits of our territory. 



5. P. rugelii Shuttlw. — Pineland swamps and ponds only in penin- 

 sular Florida. 



