add. ·- the plant myoporum deserti, often distinguished as ellangowan poison bush or dogwood poison bush.
2. poison bush ·add. ·- the ulmaceous plant trema cannabina, which, though not poisonous, is injurious to stock because of its large amount of fiber.
3. poison bush ·add. ·- 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.