There are two variant names. For high grades of shiitake is "dōnggū" (冬茹: どんこ) ("winter mushroom"). And another is "huāgū" ("flower mushroom," (香信: こうしん) which has a flower-like cracking pattern on the mushroom's upper surface). Both are produced at colder temperatures. There are many cultivated varieties, which grow-up in a temperature at 7C - 26C, most cultivars like cooler tempertatures.