124 PUBLIC HEALTH BULLETIN NO. 286 



6. H. galioides Lam. — Very common in acid ponds ranging over 

 most of om- Coastal Plain territory. Some observers hav^e noted that 

 there is rarely an association of Anopheles quadrimaculatus with this 

 plant. This species includes H. fasciculatum Lam. of Small's Manual. 



7. H. densiflorum Pursh — Sometimes difficult to distinguish from 

 the preceding and like it found in acid situations. Its range includes 

 most of our area. 



THEACEAE CameUia family 



1. Gordonia Ellis. 



6. lasianthus (L.) Ellis. Red Bay — Non-alluvial acid swamps and 

 bays, Coastal Plain, Florida north to North Carolina and west to the 

 limit of our territory. 



LAURACEAE Laurel family 



1. Persea Gaertn. 



P. pubescens (Pursh) Sarg. Sweet Bay — Non-alluvial swamps, 

 Coastal Plain, Florida north and west to the limits of our territory. 

 It is listed under the genus Tamala by Small. 



2. Glabraria L. 



G. geniculata (Walt.) Britton — Rare plant, found around ponds, 



mostly in acid situations. Coastal Plain, Florida to and beyond the 



limits of our territory. 



3. Benzoin Fabr. 



1. Leaves tapering to the base; petioles slender and long 1. B. aestivale. 



1. Leaves rounded or cordate at the base; petioles stout 2. B. melissaefolium. 

 and rather short. 



1. B. aestivale (L). Nees. Spice-bush — Wet woods and swamps, 

 various provinces over all of our territory, 



2. B. melissaefolium (Walt.) Nees — Uncommon in swamps and 

 pond margins over all of our Coastal Plain territory. 



MELASTOMACEAE Meadow Beauty family 



1. Rhexia L. 



1. Neck of the mature calyx tube as long as the body or 2. 



longer. 



1. Neck of the mature calyx tube much shorter than the 3. 

 body. 



2. Leaf-blades narrowly linear 1. R. cubensis. 



2. Leaf -blades elliptic or lanceolate 2. R. mariana. 



3. Stems and branches round or nearly so 3. R. lanceolata. 



3. Stems and branches sharply angled or 4-winged 4. 



4, Flowers over 2 cm. across, colored 5. 



4. Flowers less than 2 cm. across, white 6. R. parviflora. 



5. Lobes of calyx longer than neck of calyx tube; leaves 5. R. aristosa. 

 entire or nearly so. 



