your top tree looks like it may be acacia longissima.. the second one not quite sure i don't think its longifoilia. possibly a type of melanoxyn

I thought so on the Longissima but that flowers Jan-may whereas Floribuda flowers now, as seen in the pic. Pale white flowers.
I was at a local nursery last week and they had a identical plant labelled "GOSSAMER WATTLE".

the flowers on that tree look a bit different to floribunda.. floribunda has much more loose and abundant flower rods compared to the quite sparse and tight flower rods in that photo.. theres only one other that i can think of which is a rarer one that should be left alone

This was in the same area.

A.Pycnantha?

Any takers?

Golden wattle?

The main 3 things to look for spotting acacias are:
1) Flowers (Inflorescence)
2) Leaves (Phyllodes - which are technically extensions of the bark, not true leaves)
3) Seed pods (Fruit)

Here's something I put together to help ID acacias (I'll add 'seed pod' section later)

Note: All pictures are credit of WorldWideWattle.com

Im finding the hard part is not so much identifying Acacia's. Its finding out what Acacia is what.

I know what you mean.

Have you tried the online wattle key yet?

Wattle2.2

Hmm im not too tech savvy, how do you use the key?

Never mind I got the hang of it. haha

This was one was found at a spot marked on the QLD Uni wattle key.
Was found in the EXACT spot found on the map that was marked as Acacia Floribunda. What you guys think?

It has some of the hall marks of A.Floribunda. The phyllodes look a bit sparsely distributed to the A.Floribunda I usually come across. The spikes 'usually' form in 3's at each gland in the types known to me. Can you take a photo of the base of the plant in a higher resolution photo?

@Sandman
Looking back at yours, you may very well have Acacia oxycedrus x sophorae (which is actually longifolia_subsp_sophorae_x_oxycedrus)

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Here's a picture of longifolia_sub_sophorae

Was walking down my street today and noticed this since its in full flower. I was wondering if it is an acacia what type it might be ? Appreciate any knowledge :_

Looks somewhat like Acacia dealbata; but I'm no Acacia expert.

Think you might be right looks very very similar thanks for that.

only nature, your tree in the above post is Acacia Baileyana

Sweet Dreams, do the phyllodes of your plant have a basal gland? floribunda is absent of a basal gland.. i still think you have a different tree .. the flowers aren't as fluffy as those of floribunda and from what i can tell in the image the phyllodes don't look very papery (although some forms of floribunda have somewhat more leathery phyllodes). have you measured their length? could you describe the texture of the phyllodes?

floribunda gets its name because the flowers occur in abundance together.. the flowers on your tree seem too sparsely arranged to be floribunda

below a typical floribunda

Hey acacian good to see you back!

AFAIK flori also doesn't have such a prominent central vein.

good to be back! hoping I can still help in some way around the place