A perennial plant of the Asteraceae family (APG classification: Asteraceae). The stems grow in clumps, 25-55 cm tall. The leaves are 4-6.5 cm long and have grayish-white fluff on the underside. The basal leaves are not in flower, but the stem leaves grow alternately over the entire stem. The flowers bloom from July to October at the apex of the stem. At the base of the flower there are several star-shaped bracts. The bracts are somewhat sparse, and the surface is densely covered with dirty yellowish-gray fluff. It grows in slightly dry gravel and rock crevices from mountainous areas to high mountains, and is distributed from Japan to the temperate zone of central continental China. It is also thought that the Chinese variety is a different species. There are many variations, and in the high mountains of the Chubu region there is a variety called Mineusyukisou, which has a small overall size and few flower heads, and in the deep mountains of the Kii Peninsula and Shikoku there is a variety called Kousyukisou, which has densely clumping stems and small, spatula-shaped leaves. It is closely related to edelweiss. [Hiroji Koyama January 21, 2022] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
キク科(APG分類:キク科)の多年草。茎は叢生(そうせい)し、高さ25~55センチメートル。葉は長さ4~6.5センチメートル、裏面には灰白色の綿毛がある。根出葉は花期にはないが、茎葉が茎全体にわたり互生する。花は7~10月、茎頂について開く。花の基部には星状に射出する数枚の包葉がある。包葉はややまばらにつき、表面には汚れた黄灰色の綿毛が密生する。山地から高山に至るやや乾いた礫地(れきち)や岩の割れ目に生え、日本から中国大陸中央部の温帯にかけて分布する。中国産を別種とする考えもある。変異が多く、中部地方の高山には、全体が小さく頭花の数の少ない変種ミネウスユキソウがあり、また紀伊半島と四国の深山には、茎が密に叢生し、葉が小さくてへら形の変種コウスユキソウがある。エーデルワイスとは近縁である。 [小山博滋 2022年1月21日] 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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