A small orchid plant (illustration) that grows in marshes from the subalpine zone to the cool temperate zone. Its name, Asahiran, comes from its crimson-purple flower color. Its other name, Sawararan, comes from the fact that it grows in marshes. The leaves die in winter and the plant overwinters as a pseudobulb. The pseudobulb is about 6 mm in diameter and half-buried in sphagnum moss. One flower stalk and one leaf emerge from the base of the pseudobulb. The leaves are erect, linear-lanceolate, 6-15 cm long and 4-8 mm wide. The flower stalk is 10-30 cm tall and produces one or, rarely, two crimson-purple flowers that bloom in June and July. The sepals do not open flat, but are oblanceolate, 2-2.5 cm long. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
亜高山帯から冷温帯の湿原に生える小型のラン科植物(イラスト)。紅紫色の花色よりアサヒランの名がある。別名の沢蘭(さわらん)は湿原生であることによる。葉は冬に枯れ,偽球茎で越冬する。偽球茎は直径約6mm,ミズゴケ中に半ば埋まる。偽球茎の基部より1花茎と1葉を出す。葉は直立し,線状披針形,長さ6~15cm,幅4~8mm。花茎は高さ10~30cm,花は紅紫色で,1個まれに2個,6~7月ころ開く。萼片は平開せず,倒披針形,長さ2~2.5cm。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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