Young specimen of Dracaena cinnabari in the Koko Crater Botanical Garden, Honolulu, Hawaii, United States The dragon blood tree has a unique and strange appearance, with an "upturned, densely packed crown having the shape of an uprightly held umbrella". This evergreen species is named after its dark red resin, which is known as "dragon s blood". Its leaves are found only at the end of its youngest branches; its leaves are all shed every 3 or 4 years before new leaves simultaneously mature. Branching tends to occur when the growth of the terminal bud is stopped, due to either flowering or traumatic events (e.g. herbivory). The trees can be harvested for their crimson red resin, called dragon s blood, which was highly prized in the ancient world and is still used today. Dragon s blood is used as a stimulant and abortifacient. The root yields a gum-resin, used in gargle water as a stimulant, astringent and in toothpaste. The root is used in rheumatism, the leaves are a carminative. The local inhabitants of the city in the Socotra Island use the dragon s blood resin as a cureall. They use it in general wound healing, as a coagulant, cure for diarrhea, for dysentery diseases, for lowering fevers. It is also taken for ulcers in the mouth, throat, intestines and stomach.