Poison ivy is also known as toxicodendron radicans. its species identifier is

toxicodendron
radicans
ivy
poison

Toxicodendron radicans, commonly known as eastern poison ivy or poison ivy, is an allergenic Asian and Eastern North American flowering plant in the genus Toxicodendron.

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Toxicodendron radicans.

so radicans is the answer

The asian oyster was introduced to replace depleted native fish populations - Intentional release

European brown trout were introduced to establish sport fisheries - Intentional release

European green crabs began threatening commercial fisheries - Unintentional release

Cogon grass arrived as seeds in packing material - Unintentional release