Poison bush \Poison bush\ In Australia:
(a) Any fabaceous shrub of the genus {Gastrolobium}, the
herbage of which is poisonous to stock; also, any
species of several related genera, as {Oxylobium},
{Gompholobium}, etc.
(b) The plant {Myoporum deserti}, often distinguished as
{Ellangowan poison bush} or {dogwood poison bush}.
(c) The ulmaceous plant {Trema cannabina}, which, though
not poisonous, is injurious to stock because of its
large amount of fiber.
[Webster 1913 Suppl.]