122 PUBLIC HEALTH BULLETIN NO. 2 86 



ACERACEAE Maple family 



1. Acjr L. 



1. Leaves simple 2. 



1. Leaves compound 1. A. negundo. 



2. Leaf-bia,des glabrous or nearly so beneath 2. A. rvhrum. 



2. Leaf-blades wooly beneath 3. A. drv.vimondii. 



1. A. negundo L. Ash-!eaved Maple — River-swamps (»ver ail of 

 our territory. This species is listed under the genus Negundo by 

 Small. 



2. A. ruhrum L. Red Maple — Creek and river-swamps over all 

 of our territory. It and the following species are cited under the 

 generic name of Rufacer by Small. 



3. A. drummondii Hook. & Arn. Red Maple— Perhaps most 

 common in the Mississippi Valley region but also occurring in river- 

 swamps from Florida to Georgia and westward. Sometimes con- 

 sidered as only a variety of the preceding. 



RHAMNACEAE Buckthorn family 

 1. Berchemia Neck. 



B. scandens (Hill) Trelease. Rattan-vine — Swamps of creeks and 

 rivers, mostly Coastal Plain, Florida north and west beyond the 

 limits of our range. 



VITACEAE Grape family 



1. Ampelopsis Michx. 



A. arhorea (L.) Rusby. Pepper-vine — Swamps of the larger 

 rivers over all of our Coastal Plain and Mississippi Valley territory. 



MALVACEAE Mallow family 



1. Hibiscus L. 



1. Flowers brilliant red 2. 



1. Flowers pink or white 3. 



2. Leaf -blades with 5-7 narrow elongate lobes 1. H. coccinevs. 



2. Leaf-blades merely toothed or with 3-6 pronii- 2. H. semilohatus. 

 nent but short, broad lobes. 



3. Leaf-blades glabrous 3. H. militaris. 



3. Leaf -blades pubescent at least beneath 4. 



4. Capsule glabrous 4. //. moschevios. 



4. Capsule pubescent 5. 



5. Capsule beaked 6. 



5. Capsule rounded or truncate at top 5. H. lasiocarpus. 



6. Leaf -blades lanceolate to ovate; toothed but 6. H. incanus. 

 not lobed. 



6. Leaf -blades as broad as long, 3-5 lobed 7. H. grandiflorus. 



1. H. coccineus Walt. — Swamps along the coast in Georgia, 

 Florida, and Alabama. 



