えぞとうひれん (蝦夷塔飛廉) [Index] [Back] わが国の本州、青森県下北半島および北海道、それにサハリンに分布しています。海岸の草地に生え、高さは３０〜６０センチになります。葉は長い楕円形で分厚く、縁には粗い鋸歯があります。６月から８月ごろ、茎頂に紅紫色の小さな頭花を１０〜４０個、咲かせます。総苞は狭い筒形で、総苞片は先端が糸状に伸び、揺るく反曲します。花後にできる果実は痩果です。 キク科トウヒレン属の多年草で、学名は Saussurea yesoensis (syn. Saussurea riederi ssp. yezoensis var. insularis、Saussurea riederi ssp. yezoensis var. elongata)。英名はありません。 The "Ezo-touhiren" (Saussurea yesoensis) belongs to Asteraceae (the Aster family). It is a perennial herb that is found on the Shimokita Peninsula in Aomori Prefecture on Honshu, in Hokkaido in Japan, and on Sakhalin. It grows in coastal grasslands and reaches a height of 30 to 60 cm. The leaves are long, elliptical, and thick, with coarse serrations along the edges. From June to August, 10 to 40 small, reddish-purple flower heads bloom at the tips of the stems. The involucre is narrowly tubular, and the involucral bracts extend into thread-like tips that curve slightly backward. The fruit that forms after flowering is an achene. 北海道積丹町神岬町「神威岬」にて、2026年09月29日撮影。 Shu Suehiro shu@botanic.jp