A perennial plant of the Scrophulariaceae family. It is found on the Japan Sea coast from the Chubu region of Honshu northward, in Hokkaido, the southern Kuril Islands, and Sakhalin, and usually grows long, slender underground stems to form colonies in mountain wetlands. The stems are square and upright, reaching a height of 10-30 cm, with opposite leaves. The leaves are ovate or oval, stalkless, 2.5-6 cm long, 1-3 cm wide, and have coarse serrated edges. In July and August, a single flower with a long, slender stalk is produced in the axil at the top of the stem. The corolla is yellow and tubular, with five shallow lobes at the top. There are four stamens inside the flower tube. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
ゴマノハグサ科の多年草。本州中部地方以北の日本海側,北海道,南千島,サハリンに分布し,普通,細長い地下茎を伸ばして山間の湿地に群落をつくる。茎は方形で直立し高さ 10~30cmになり,葉を対生する。葉は卵形または卵円形で柄がなく,長さ 2.5~6cm,幅1~3cm,縁にあらい鋸歯がある。7~8月,茎の上部の葉腋に細長い柄をもつ花を1個つける。花冠は黄色,筒形で,上部が浅く5裂する。花筒内には4本のおしべがある。
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