つくしまむしぐさ (筑紫蝮草) [Index] [Back] わが国の九州中北部に分布しています。山地の林下に生え、高さは３０〜６０センチになります。葉は鳥足状で、７〜１１個の小葉をつけます。小葉は披針形から狭卵形または長楕円形で、縁は全縁または鋸歯があります。４月から６月ごろ、茎頂に仏炎苞につつまれた肉穂花序に花を咲かせます。仏炎苞は緑色または紫褐色で、舷部の先が尾状に伸びるのが特徴です。付属体は細い棒状で短い柄があり、上部はやや前に曲がります。果実は９月から１０月に、真っ赤に熟します。 サトイモ科テンナンショウ属の多年草で、学名は Arisaema maximowiczii。英名はありません。 The "Tsukushi-mamushi-gusa" (Arisaema maximowiczii) belongs to Araceae (the Arum family). It is a perennial herb that is distributed throughout central and northern Kyushu in Japan. It grows under the canopy of mountainous forests and reaches a height of 30 to 60 m. The leaves are palmately compound, bearing 7 to 11 leaflets. The leaflets are lanceolate to narrowly ovate or oblong, with entire or serrated margins. From around April to June, it produces flowers in a spadix enclosed by a spathe at the stem apex. The spathe is green or purplish-brown and is characterized by its tail-like extension at the tip of the flanks. The appendages are slender, rod-shaped with short stalks, and the upper part curves slightly forward. The fruit ripens to a deep red color from September to October. 大分県別府市「鶴見岳」にて、2026年05月14日撮影。 Shu Suehiro shu@botanic.jp