27 



This genus is quite largely developed in the United States. They 

 are perennial grasses, mostly tall, and with tough, wiry stems. 

 Some of them occur in nearly all parts of the country from New 

 England to Florida and west to Arizona. They are most abundant, 

 however, in the Southern States, where they have been employed 

 for permanent pastures. When they occur in quantity they can be 

 utilized, but to be of value they should be kept from sending up 

 their strong stems, as these are universally rejected by cattle and 

 horses. They are not to be recommended for cultivation, but their 

 place should as soon as possible be supplanted by more valuable 

 grasses. They are commonly known as Broom grass or Broom 

 sedge. 



1. A. arctatus, Chap. Florida. 



2. A. argyrseus, Schultz. (A. argenteus, Ell.) Virginia to Texas. 



3. A. brachystachyus, Chap. Florida. 



4. A. Cabanisii, Hack. Pennsylvania, southward. 



5. A. cirrhatus, Hack. New Mexico to Arizona. 



6. A. dissitiflorus, Michx. (A. Virginicus, Linn.) Massachusetts 



to Texas. 



A. dissitiflorus, var. glaucns, Hack. Florida to Texas. 



A. dissitiflorus, var. tetrastachyus, Hack. (A. tetrastachyus, Ell.) 



A. dissitiflorus, var. vaginatus, Hack. Virginia and southward. 



7. A. Elliottii, Chap. Virginia to Texas. 



8. A. gracilis, Spreng. Florida. 



9. A. Hallii, Hack. Kansas to Arizona. 



10. A. hirtiflorus, Kunth, var. Feensis, Hack. (A. Feensis, Fourn.) 



New Mexico to Arizona. 

 A. hirtiflorus, Kunth, var. oligostachyus, Hack. (A. oligos- 

 tachyus, Chap.) Florida. 



11. A. longiberbis, Hack. Florida. 



12. A. macrourus, Michx. New York to Florida and west to 



Southern California. 

 A. macrourus, var. abbreviatus, Hack. 

 A. macrourus, var. corymbosus, Chap. 

 A. macrourus, var. glaucopsis, Chap. 



13. A. provincialis, Lam. (A. furcatus, Muhl.) East of Rocky 



Mountains. 

 A. provincialis, var. pycranthus, Hack. 

 A. provincialis, var. Lindheimeri, Hack. Texas. 



