| Aristida
basiramea
Engelm. ex Vasey fork-tipped threeawn Introduced |
       
|
| Aristida
dichotoma
Michaux poverty grass Native |
                            
|
| Aristida
longespica var. geniculata
(Raf.) Fern. = Aristida intermedia Scribner & Ball barrens needlegrass Native |
          
|
| Aristida
oligantha
Michaux prairie needlegrass Introduced |
    
|
| Aristida
tuberculosa
Nutt. seebeach needlegrass Threatened |
             
|