Species

Toxicodendron diversilobum (Pacific poison oak)

Toxicodendron diversilobum. Photo: (c) Daniel Sabo, some rights reserved (CC BY-NC)

iNaturalist • Wikipedia

Toxicodendron diversilobum (syn. Rhus diversiloba), commonly named Pacific poison oak or western poison oak, is a woody vine or shrub in the Anacardiaceae (sumac) family. It is widely distributed in western North America, inhabiting conifer and mixed broadleaf forests, woodlands, grasslands, and chaparral biomes. Peak flowering occurs in May. Like other members of the Toxicodendron genus, T. diversilobum causes itching and allergic rashes in many humans after contact by touch or smoke inhalation.

Humboldt Life
- Kingdom: Plantae (Plants)
  - Phylum: Tracheophyta (Vascular plants)
    - Subphylum: Angiospermae (Flowering plants)
      - Class: Magnoliopsida (Dicots)
        Order: Sapindales (Soapberries, cashews, mahoganies, and allies)
        Family: Anacardiaceae (Cashew family)
        Subfamily: Anacardioideae (Cashews, sumacs, and allies)
        Genus: Toxicodendron (Poison ivies and oaks)
        Species: Toxicodendron diversilobum (Pacific poison oak)

Sightings

Where in Humboldt

Discussion

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