Classification
Within iNaturalist.org

All Names

  • English
    • Pacific Poison Oak
    • Western Poison Oak
  • Scientific Names
    • Toxicodendron diversilobum
    • Rhus diversiloba

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Recent observations

Photos / Sounds

What

Pacific Poison Oak Toxicodendron diversilobum

Date

July 18, 2014 05:00 PM PDT

Description

Diversity of leaf color and morphology

Photos / Sounds

Square

What

Western Poison Oak Toxicodendron diversilobum

Observer

michaelhanrahan

Date

July 4, 2014

Description

along the Fire Road, western side of the island.

Photos / Sounds

Square

What

Western Poison Oak Toxicodendron diversilobum

Observer

dpom

Date

July 18, 2014

Photos / Sounds

Square

What

Pacific Poison Oak Toxicodendron diversilobum

Observer

kcarter

Date

July 17, 2014 05:49 PM PDT

Photos / Sounds

Square

What

Western Poison Oak Toxicodendron diversilobum

Observer

sienaparrish

Date

July 3, 2014

Description

The poison oak had grown up into a bush and was about 3 feet away from the trail. The leaves at the bottom were shaded but the ones at the top were bathed in light. About 1/3 of the leaves were green and about 2/3 were varying colors of red.

Photos / Sounds

What

Pacific Poison Oak Toxicodendron diversilobum

Observer

ross2

Date

July 14, 2014 09:04 AM PDT

Photos / Sounds

Square

What

Pacific Poison Oak Toxicodendron diversilobum

Observer

lisa44ketcham

Date

July 13, 2014 09:24 AM PDT

Photos / Sounds

Square

What

Pacific Poison Oak Toxicodendron diversilobum

Observer

leslie_flint

Date

July 13, 2014 08:23 AM PDT

Photos / Sounds

14622834585_2fd454f9ca_s

What

Pacific Poison Oak Toxicodendron diversilobum

Observer

james3

Date

July 10, 2014

Photos / Sounds

Square

What

Western Poison Oak Toxicodendron diversilobum

Observer

mackensierose

Date

July 8, 2014

Description

Red, green, and shriveled all right next to each other.

Photos / Sounds

What

Western Poison Oak Toxicodendron diversilobum

Observer

electralyman

Date

July 3, 2014

Description

Found in the shade under and tree/shrub. Entire plant is red. Somewhat isolated from other poison oak (no other poison oak in 4 ft radius).

Photos / Sounds

Square

What

Western Poison Oak Toxicodendron diversilobum

Observer

gbentall

Date

July 9, 2014 09:46 AM PDT

Description

I have never reacted to poison oak, so it's easier for me to say how pretty it can be....

View all observations

Description from Wikipedia

Toxicodendron diversilobum, commonly named Pacific poison oak or western poison oak (syn. Rhus diversiloba), is in the Anacardiaceae family (the sumac family).

No range data available.