0 a North American plant similar to poison ivy, that causes your skin to itch and turn red if you touch it: --
There are humid chaparrals made up of coyote brush, poison oak, elderberry, snowberry, bracken fern, and blackberry brambles.
Sleep deprivation is common, as is routine exposure to dust, smoke, poison oak, extreme weather (both heat and cold), and other environmental hazards.
None of the poison oak plants are removed in this grove in a commitment to preserving the natural aspect of the area.
The woodland understory exhibits toyon, coffeeberry, poison oak and, in the higher exposed areas with ecotones to chaparral, containing chiefly coyote brush.
The park includes substantial thickets, isolated examples, and mixed ground cover of western poison oak.
It produces the irritant urushiol much like its close relatives poison sumac and poison oak.
Cross-country travel is allowed but caution is advised as there is poison oak, stinging nettles, unstable cliffs and fragile meadows.
A traditional folk remedy for rashes caused by poison ivy, poison oak, and stinging nettle is a poultice soaked in boiled bay leaves.
