| Scientific Name | Epipactis gigantea Dougl. ex Hook. |
| Family | Orchidaceae |
| Common Names | giant helleborine |
| Eastern Washington | Native |
| Conservation Status | State of Washington Watch List; Idaho Priority 2 (S3); Location hidden. |
| Notes |
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Ferry Co., WA – 7/1/2006 
Ferry Co., WA – 7/1/2006 
Ferry Co., WA – 7/1/2006 
Ferry Co., WA – 7/1/2006 
Ferry Co., WA – 7/1/2006 
Stevens Co.; 8/27/2012 
Stevens Co.; 8/27/2012 
Ferry Co., WA – 6/16/2013 
Ferry Co., WA – 6/16/2013 
Whitman Co., WA; 4/28/2014 
Whitman Co., WA; 4/28/2014 
Whitman Co., WA; 4/28/2014 
Whitman Co., WA; 4/28/2014 
Whitman Co., WA; 4/28/2014 
Idaho Co., ID; 6/8/2015