Acacia Identification

[Dimitri McTavish]

Hi fellow travellers,
I need a little help with plant id. I have recently moved and have 3 Acacias growing in my backyard.
I am certain that the first is an A. Obtusifolia, the second is an A. Longifolia and I am not sure what the third is.
I have already begun extracting from the first plant.
A. Obtusifolia

A. Longifolia

Unknown

Thanks in advance for the help.
The first extraction on the Obtusifolia? yielded a small mount of yellow goo.

 

[--Shadow]

Please see:
Acacia Identification Thread