I just had to look up this tree since I have never heard of it! It appears to be a hybrid of several willows but originally from Australia, hence the common name. I found the below on the web. I am sure you can check more sites reference to burning these trees, but based on what I found, you would be taking a risk.

"When it comes to selecting firewood, wood that comes from willow trees is among the least desirable of all firewoods. Willow produces a low amount of heat and burns very quickly compared to oak or maple firewood. Using willow in a stove can lead to a buildup of creosote in the stove pipe that can cause a chimney fire."

Read more: Is Willow Tree Wood Good for Burning? : eHow.com http://www.ehow.com/info_7979941_willow-tree-wood-good-burning.html#ixzz1RnnAfZSV

thanks

I just found that they are a willow tree also.
According to the btu chart i just found will is rates at 14 so if I let it dry really well I will try and burn it and see how it goes.

If it burns poorly or too quick I will use it for campfire wood.