Passage: Sugi is the national tree of Japan, commonly planted around temples and shrines, with many hugely impressive trees planted centuries ago. Sargent (1894; The Forest Flora of Japan) recorded the instance of a daimyō (feudal lord) who was too poor to donate a stone lantern at the funeral of the shōgun Tokugawa Ieyasu (1543–1616) at Nikkō Tōshō-gū, but requested instead to be allowed to plant an avenue of sugi, so that "future visitors might be protected from the heat of the sun". The offer was accepted; the Cedar Avenue of Nikkō, which still exists, is over 65 km (40 mi) long, and "has not its equal in stately grandeur".Jōmon Sugi (縄文杉) is a large cryptomeria tree located on Yakushima, a UNESCO World Heritage Site, in Japan. It is the oldest and largest among the old-growth cryptomeria trees on the island, and is estimated to be between 2,170 and 7,200 years old.

Question: What type of object is sugi?
national tree of Japan