These are 2 trees in the Golden Garden. The Peltophorum pterocarpum (common name: Yellow Flame) flowers are mostly taken over by the brownish pods. In the second photo, there is a black carpenter bee that was visiting the yellow flowers for nectar, and would pollinate the flowers in the process.
The Grevillea baileyana (synonym: G. pinnatifida; common name: Brown Silky Oak, White Oak, Scrub Beefwood; Family: Proteaceae) was recently planted and the bronzy lobed juvenile leaves are an interesting addition to the texture of the garden.
Some links on the Grevillea are shown here:
