What is "gastrolobium grandiflorum"

Wallflower \Wall"flow`er\, n.

1. (Bot.) A perennial, cruciferous plant ( Cheiranthus Cheiri), with sweet-scented flowers varying in color from yellow to orange and deep red. In Europe it very common on old walls.

   Note: The name is sometimes extended to other species of Cheiranthus and of the related genus Erysimum, especially the American Western wallflower ( Erysimum asperum), a biennial herb with orange-yellow flowers.

2. A lady at a ball, who, either from choice, or because not asked to dance, remains a spectator. [Colloq.]

3. (Bot.) In Australia, the desert poison bush ( Gastrolobium grandiflorum); -- called also native wallflower.

Gastrolobium grandiflorum, commonly known as wallflower poison, wallflower poison bush or heart-leaf poison bush, is a bushy shrub which is endemic to Australia.

It grows to 2 or 3 metres in height and between late summer and early winter (February to August in Australia) it produces orange-red pea-flowers with a yellow centre and red veins. The leaves are hairy and heart-shaped on younger plants and elliptic and more glabrous on older plants, up to 6 cm long and 2.7 cm wide.

The species was first formally described by botanist Ferdinand von Mueller and published in Fragmenta Phytographiae Australiae in 1863. It is the most widespread within the genus, occurring across a large area of Queensland, as well as in the Northern Territory, Western Australia and South Australia.