The Hybrid Kurrajong (Brachychiton acerifolius x Brachychiton populneus) meaning Poplar- like is a natural hybrid and was first recognised at the end of the nineteenth century and noted by eminent botanist Baron von Mueller . The tree is an interesting mix of its parents having the red flowers of the lllawarra Flame tree and the Poplar-like leaves of the Kurrajong.
The Flame Tree (Brachychiton acerifolius) is native to Eastern Australia. The tree has broad Maple -ike leaves and red bell shaped flowers in clusters which are spectacular when the tree has shed its leaves at flowering time. The other parent of the Hybrid Kurrajong is Brachychiton populneus commonly called Kurrajong and is also native of the Eastern Australia. The habit of the tree varies greatly from a small to moderately large stout trunked tree with pale bell shaped flowers which are pale yellowish to pink on the inside.
The Regent Street South tree is a large specimen and a fine example of the Hybrid Kurrajong, located in a unique setting where it is an outstanding landmark.