| 1 | 
|   | Species 
album
L. common name: 
white hellebore
 |   |  | 
|  | 
| 2 | 
|   | Subspecies 
album common name: 
white false hellebore
 |  |  |  
| 3 | 
|   | Subspecies 
oxysepalum
(Turcz.) Hult�n common name: 
white false hellebore
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| 4 | 
|   | Species 
californicum
Dur. common name: 
false hellebore, California corn lily
 |   |  | 
|  | 
| 5 | 
|   | Varietas 
californicum common name: 
California false hellebore
 |  |  |  
| 6 | 
|   | Varietas 
caudatum
(Heller) C.L. Hitchc. common name: 
Cascade false hellebore
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| 7 | 
|   | Species 
caudatum
Heller syn. Veratrum californicum var. caudatum
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| 8 | 
|   | Species 
eschscholtzianum
(J.A. & J.H. Schultes) Rydb. ex Heller syn. Veratrum viride
 |  |  | 
| 9 | 
|   | Species 
eschscholtzii
Gray |  |  | 
|  | 
| 10 | 
|   | Varietas 
incriminatum
Boivin syn. Veratrum viride
 |  |  |  | 
| 11 | 
|   | Species 
fimbriatum
Gray common name: 
fringed false hellebore
 |  |  | 
| 12 | 
|   | Species 
insolitum
Jepson common name: 
Siskiyou false hellebore
 |  |  | 
| 13 | 
|   | Species 
intermedium
Chapman syn. Melanthium woodii
 |  |  | 
| 14 | 
|   | Species 
luteum
L. syn. Chamaelirium luteum
 |  |  | 
| 15 | 
|   | Species 
nigrum
L. common name: 
false hellebore
 |   |  | 
| 16 | 
|   | Species 
oxysepalum
Turcz. syn. Veratrum album ssp. oxysepalum
 |  |  | 
| 17 | 
|   | Species 
parviflorum
Michx. syn. Melanthium parviflorum
 |  |  | 
| 18 | 
|   | Species 
speciosum
Rydb. syn. Veratrum californicum var. californicum
 |  |  | 
| 19 | 
|   | Species 
tenuipetalum
Heller common name: 
Colorado false hellebore
 |  |  | 
| 20 | 
|   | Species 
virginicum
(L.) Ait. f. syn. Melanthium virginicum
 |  |  | 
| 21 | 
|   | Species 
viride
Ait. common name: 
American white hellebore
 |   |  | 
|  | 
| 22 | 
|   | Subspecies 
eschscholtzii
(Gray) A.& D. L�ve syn. Veratrum viride
 |  |  |  
| 23 | 
|   | Varietas 
eschscholtzii
(Gray) Breitung syn. Veratrum viride
 |  |  |  | 
| 24 | 
|   | Species 
woodii
J.W. Robbins ex Wood syn. Melanthium woodii
 |  |  |