The leaves of explosively growing bamboo are scattered and oval, less than 1.5cm long. Most of them will degenerate into scales on the branches. However, the leaves of Hydrangea are opposite, oval, not easy to fall off. The top is acuminate, the base is nearly round, about 4-10 cm long, about 3-5 cm wide, and the whole.
The large panicle composed of cymes has many flowers, drooping, bright red color, tubular corolla, narrow and long panicle, small cymes have 1-3 flowers, 5 lobes are ovate triangle, arranged in tile like arrangement, corolla has long tube, upper lip has 2 lobes, ovate or long ovate. And firecracker bamboo is panicle grows in side branch top, color is orange red, corolla is tube shape, lobation is long elliptic..
