"Mallees" are a number of Eucalypts that send out several slender trunks from an underground lignotuber instead of from one main trunk. It's suggested this habit is a response to bushfire and challenging terrain.
This particular Mallee is a "Yate", a small group of Eucalypts from Western Australia with horned seed flower-heads/capsules that appear like sea-anenomes. The one I've got here is, I think, "bushy yate", or Eucalyptus lehmannii. A delightful small tree, I'm currently preparing the ground beneath it so that what's planted there fits it. I'll post pictures of the outcome soon.
I hope you enjoy the wild fragility of my cut specimen till then.