[Wild Shrubs Found West of the Cascade Mountains]
The Sumac Family West of the Cascade Mountains of Oregon and Washington

Anacardiaceae

 

 

Smooth Sumac, Western Sumac: Rhus glabra (Synonym: Rhus glabra var. occidentalis) -

Lemonade Sumac, Skunkbush: Rhus trilobata (Synonym: Rhus trilobata var. trilobata) -

Poison Oak, Pacific Poison Oak: Toxicodendron diversilobum (Synonyms: Rhus diversiloba, Rhus radicans ssp. diversilobum) -

Poison Ivy, Western Poison Ivy: Toxicodendron rydbergii (Synonyms: Rhus radicans, Rhus radicans var. rydbergii, Rhus rydbergii, Rhus toxicodendron, Rhus toxicodendron var. vulgaris, Toxicodendron radicans) -

Paul Slichter E-mail