| Scientific Name | Ageratina occidentalis (Hook.) R. King & H. Robinson |
| Family | Asteraceae |
| Common Names | western snakeroot, western boneset, western eupatorium |
| Eastern Washington | Native |
| Conservation Status | |
| Notes |
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Crater Lk Nat PK, E Rim Drive, 4.4 mi SW of rd to Cloudcap Overlook – Klamath Co., OR – 9/18/2009 
Crater Lk Nat PK, E Rim Drive, 4.4 mi SW of rd to Cloudcap Overlook – Klamath Co., OR – 9/18/2009 
Crater Lk Nat PK, E Rim Drive, 4.4 mi SW of rd to Cloudcap Overlook – Klamath Co., OR – 9/18/2009