Minecraft wiki entry for Tree, associated text: Trees in 0.0.14a.[8]
Another old image of a tree, along with its "cross-cut."[9]
A classic-styled tree before biomes were introduced.
Notch posted this image of the new large trees provided to him by Paul Spooner.[3]
Large trees with leaf removed in Alpha 1.1.2_01.
Tall spruce tree in forest in taiga biome.
A floating tree, formed artificially after being set on fire with a Flint & Steel.
A dying tree in a Pocket Edition.
Comparison of oak tree sizes.
Trees in the Alpha stages of development.
A variety of tree types: From left to right, oak, birch, spruce, and jungle.
A giant dark oak tree (left) and a giant jungle tree (right).