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Hixson, John
Toxicodendron rydbergii
Toxicodendron rydbergii (Small ex Rydb.) Greene
Western Poison Ivy
Anacardiaceae (Sumac Family)
Synonym(s): Rhus radicans var. rydbergii, Rhus radicans var. vulgaris, Rhus toxicodendron var. vulgaris, Toxicodendron desertorum, Toxicodendron radicans var. rydbergii
USDA Symbol: TORY
USDA Native Status: L48 (N), CAN (N)
Western Poison Ivy is a member of the sumac family (family Anacardiaceae) which includes trees, shrubs, and few woody vines with resinous sap often in bark and other parts; in a few species the resin or volatile oil is caustic and poisonous to the skin.
Plant Characteristics
Duration: PerennialHabit: Herb , Subshrub , Shrub , Vine
Fruit Type: Drupe
Size Notes: Usually found shrub-like, up to about 10 feet tall.
Autumn Foliage: yes
Bloom Information
Bloom Color: White , YellowBloom Time: May , Jun
Distribution
USA: AZ , CO , CT , DE , IA , ID , IL , IN , KS , MA , MD , ME , MI , MN , MT , NC , ND , NE , NH , NM , NV , NY , OH , OK , OR , PA , RI , SD , TX , UT , VA , VT , WA , WI , WV , WYCanada: AB , BC , MB , NB , NS , ON , PE , QC , SK , YT
Growing Conditions
Light Requirement: Sun , Part Shade , ShadeSoil Moisture: Dry , Moist
National Wetland Indicator Status
| Region: | AGCP | AK | AW | CB | EMP | GP | HI | MW | NCNE | WMVE |
| Status: | FAC | FACU | FAC | FACU | FAC | FAC | FACU |
Web Reference
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona ChapterAdditional resources
USDA: Find Toxicodendron rydbergii in USDA PlantsFNA: Find Toxicodendron rydbergii in the Flora of North America (if available)
Google: Search Google for Toxicodendron rydbergii
Metadata
Record Modified: 2023-01-18Research By: TWC Staff