Tree

Dungeon features
Air	_ Altar
# Corridor	# Cloud
#. Drawbridge	+-| Door
. Doorway	{ Fountain
| Headstone	.  Floor
>< Ladder	. Ice
# Iron bars	} Lava
} Moat	# Sink
Solid rock	>< Staircase
\ Throne	^" Trap
# Tree	- | Wall
~ Vibrating square

Trees are represented by ±, or by #, depending on your operating system and options. They are primarily found in the Ranger Quest and in Minetown. Applying an axe in the direction of a tree will destroy it and generate a random fruit. Doing so in the line of sight of a watchman will anger him ("Halt, vandal! You're under arrest!"). Oddly enough, wands of fire will bounce off of trees.

Kicking a tree will either generate a random fruit or summon "the former inhabitants of the tree" - i.e. killer bees.