| Trillium
cernuum
L. nodding trillium Native |
                 
|
| Trillium
cuneatum
Raf. little sweet Betsy Introduced |
  
|
| Trillium
erectum
L. red trillium, purple trillium Native |
                            
|
| Trillium
grandiflorum
(Michx.) Salisb. white trillium Introduced |
  
|
| Trillium
simile
Gleason jeweled wakerobin Introduced |
    
|
| Trillium
undulatum
Willd. painted trillium Native |
              
|