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Poison Oak - Poison Oaks Anacardiaceae (Toxicodendron diversiloba)
Identification: a tiny plant with more deeply cleft lobes than poison ivy. The leaves are hairy, glossy, and stemless.
Habitat: Usually found in California's canyons and mountain valleys in the West. an eastern variant as well.
irritants/toxins: urushiol.
Itching, redness, and contact dermatitis are the symptoms.
First aid: treat with benadryl, calamine lotion, and oatmeal baths; in extreme situations, use prescription or over-the-counter prednisone and other anti-inflammatory drugs. Similar to poison ivy and poison sumac.
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