sign up (free!)
Dragon's Blood tree "Dracaena cinnabari" The crown of the tree sees multiple branches parting, but after that each branch divides along binary lines, though the frequency of this division is governed by some rule that ensures there is enough surface area for all branches to get sunlight.
Look at those trees! (Island of Socotra, Yemen)
A remnant forest of endemic dragon's blood trees on the island of Socotra, Yemen. Photo: Trevor Cole via 500px