Acacia

@ AchmmadMWY thanks for the ID and for the precious link about portuguese invasive plants(one of my concerns)it's perfect ,thanks again
@Cindy thanks for the informations and spottes that you allways have about almost every subject:)

You're welcome, thank you :) I try and note if a plant is native or not in my area as well as mention if its listed as an invasive species. Sometimes that information isn't available but I try.

Thanks Cindy! Nice shot and thanks that you've inform that the plants isn't native. I think its very important information. :)

I agree with AchmmadMWY. I have a similar spotting http://www.projectnoah.org/spottings/806...

You should check again. But, this may be one of the invasive species in Portugal. Hope it can help you Antonio! :)