
1) Bush 2) Poison bush 3) Poison pea 4) Shrub
Found on
https://www.crosswordclues.com/clue/gastrolobium

Gastrolobium is a genus of flowering plants in the family Fabaceae. There are over 100 species in this genus, and all but two are native to the south west region of Western Australia. A significant number of the species accumulate monofluoroacetic acid - the key ingredient of the poison known commonly as 1080 which caused introduced/non native ani...
Found on
http://en.wikipedia.org/wiki/Gastrolobium

Gastrolobium is a large genus of leguminous plants occurring in South-western Australia. Several of the species often prove fatal to cattle who eat of their foliage, and they are hence known as poison-plants.
Found on
http://www.probertencyclopaedia.com/browse/BG.HTM
noun any of various Australian evergreen shrubs of the genus Gastrolobium having whorled compound leaves poisonous to livestock and showy yellow to deep reddish-orange flowers followed by two-seeded pods
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.