84 



PUBLIC HEALTH BULLETIN NO. 2 86 



13. Setaria Beauv. 



S. magna Griseb. Giant Bristlegrass — Marshes near the coast over 

 most of our territory. 



14. Erianthus Michx. 



1. Spikelets naked or nearly so at base 1. E. strictus. 



1. Spikelets with a conspicuous hair tuft at base 2. 



2. Basal hairs sparse and shorter than spikelets 2. E. brevibarbis. 



2. Basal hairs copious and longer than spikelet 3. E. giganteus. 



1. E. siricius Baldw. Narrow Plumegrass — Coastal Plain acid 

 aquatic areas, over most of our area. 



2. E. brevibarbis Michx. Brown Plumegrass — Distribution similar 

 to the preceding. 



3. E. giganteus (Walt.) Muhl. Giant Plumegrass — More truly- 

 aquatic than the preceding two, similarly distributed. 



15. Manisuris L. 



M. rugosa (Nutt.) Kuntze — In acid situations, range includes all 

 of our Coastal Plain territory. 



16. Tripsacum L. 



T. daciyloides L. Gamagrass — Widely distiibuted in moist places; 

 not common, range includes all of our territory. 



CYPERACEAE Sedge family 



1 . Flowers with both stamens and pistils 2. 



1. Stamens and pistils in different flt)wers 12. 



2. Stem with one or more terminal spikelets; 3. 



leaves absent. ' 

 2. Stem with a leaf or leaves extending beyond 4. 

 spikelets (If a single leaf, this leaf may 

 appear like continuation of scape) . 

 3- Stem topped by a single spikelet; a leaf -sheath present 4. 



only at the base of the stem (fig. 1). 

 3. Stem topped by 1 to several spikelets; leaf -sheaths dis- 6. 

 tributed along the stem (fig. 2). 



Eleocharis, p. 88. 

 Fuirena, p. 93. 



Xl •'! 



Figure 1 



FlOUBE 2 



