Acacia identification please

[Key Omen]

In my local area are many yellow flowering acacias. I'm thinking I might miss my window for identification if I don't realize whats around me in time. The local tree store here had A. longifolia and I was able to recognize it near my house - not as much of this tree as the knife acacia, but its out there. I've only seen it at the shop. Turns out the one I found is not A. longifolia after all
Is there a better place to post this?

Thank you Nexus

 

[Key Omen]

there are many of them all about 2-4 meters

 

[acacian]

i don't think it is confusa judging by the leaves and the single vein down the middle. there is one of these in my area i would be interested to know what species it is

 

[Key Omen]

Im thinking it could be A. Pycnantha, but I'd have to look again at the new shrub for starters, I pulled a tick out of my head from the last time I went to those trees, and the small shrub I saw didnt look like the one in this link.

http://keyserver.lucidcentral.org/weeds/data/03030800-0b07-490a-8d04-0605030c0f01/media/Html/Acacia_pycnantha.htm