Mertensia

...A perennial plant of the Violaceae family that grows in sandy areas along the coasts of Tohoku and Hokkaido. The entire plant is fleshy and resembles Crassulaceae plants. The stems fall to the sand and can reach 1m in length, branching out frequently. The leaves are ovate, 3-7cm long and 2-5cm wide. Flowers appear in sparse snail-shaped inflorescences in July and August. The corolla is bell-shaped, 8-12mm long, and beautifully blue-purple. It opens slightly downward and has five lobes at the tip. The calyx tube has five deep lobes and the lobes are sharply pointed. The ovary has four deep lobes and becomes four caryopsis after flowering. The caryopsis is fleshy. ...

*Some of the terminology explanations that mention "Mertensia" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…東北および北海道の海岸の砂地に生えるムラサキ科の多年草。全体が多肉質で，ベンケイソウ科の植物に似ている。茎は砂地に倒れて長さ1mに達し，よく枝を分かつ。葉は卵形で長さ3～7cm，幅2～5cm。花は7～8月に，まばらなカタツムリ状花序につく。花冠は鐘形で長さ8～12mm，青紫色で美しい。やや下向きに開き，先端は5裂する。萼筒は5深裂し，裂片は鋭くとがる。子房は4深裂し，花後四つの分果となる。分果は肉質。…

※「Mertensia」について言及している用語解説の一部を掲載しています。

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