This stately seika arrangement is made with branches from a Burning Bush (scientific name: Euonymus alatus), known in Japanese as nishikigi. The plant is known as “Burning Bush” in English because of the vivid red color the leaves take on during autumn. As you can see, in this arrangement the leaves have been removed so as to focus on the ridged stems of the plant. See the close-up shot below to get a better view of the stems!
Unfortunately, this arrangement does not photograph nearly as nicely as it looks in person, but I hope you enjoy the photographs anyway!