Wordnet 3.0
ADJECTIVE (1)
1. 
 resembling a tree in form and branching structure; 
- Example: "arborescent coral found off the coast of Bermuda"- Example: "dendriform sponges"[syn: arboreal, arboreous, arborescent, arboresque, arboriform, dendriform, dendroid, dendroidal, treelike, tree-shaped]
WordNet (r) 3.0 (2006):
tree-shaped
    adj 1: resembling a tree in form and branching structure;
           "arborescent coral found off the coast of Bermuda";
           "dendriform sponges" [syn: arboreal, arboreous,
           arborescent, arboresque, arboriform, dendriform,
           dendroid, dendroidal, treelike, tree-shaped]