The middle one looks almost identical to my sample. It could easily be an acacia. The guy in charge of planting stuff on campus likes exotic and endangered plants.
Well, anything is possible but, I doubt...!:wink:
These particular two varieties of the Acacia, aren't large trees and they have a short life expectancy. The fungi and other "wood destroyers" kill them at young age, not many live to reach the 20 years, most will be affected by white fungi that attacks the wood from the inside out, making it very weak and causing it to split/brake apart or, kill it while standing up and endup disintegrating in no time. As soon as as it hits the ground (in these areas=lots of ground water/moisture), it collapses to mulch in no time...!
PS: I like to be able to "validate" what I say, with photographic evidence, when possible. Sometimes this is not so simple or possible but is this case it is. This tree lived 15 meters from my back fence, until 2 years ago when it was cut down and salvaged by, "moi"...!:biggrin:
Cheers
George