Lianas may have stems up to 100 meters (330 feet) long, and may climb over the canopy to gain maximum sunlight.Many flower only when they reach the top of the canopy.

• 藤本植物的茎可长达100米（300英尺），并攀至植物上部以获得充分的光照，多种藤本植物在此时才会开花。