Omphalodes

...A perennial plant of the family Violaceae that produces beautiful lily-colored flowers (illustration). It grows wild from central Honshu north to Hokkaido in slightly damp places in deciduous forests. It flowers from May to June. The stem is 20-40 cm tall and has many hairs. The leaves are alternate, broadly lanceolate, entire, and the few leaves at the bottom of the stem are particularly large, measuring 6-12 cm in length and 2-4 cm in width. The inflorescence is terminal and bifurcated at the base. The flowers are arranged in a snail-like shape, blooming from the bottom up. The corolla is 1-1.5 cm in diameter. The perianth forms a short flower tube at the base, which is divided into five pieces at the top and opens flat. ...

*Some of the terminology that mentions "Omphalodes" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…るり色の美しい花をつけるムラサキ科の多年草（イラスト）。本州中部以北～北海道に野生し，落葉林内のやや湿った場所に生える。花期は5～6月。茎は高さ20～40cmで，開出毛が多い。葉は互生し，広披針形で全縁，茎の下部の数枚の葉がとくに大きく，長さ6～12cm，幅2～4cmにおよぶ。花序は頂生し，基部で二叉（にさ）に分かれる。花はカタツムリ状に配列し，下位のものから順に咲く。花冠は径1～1.5cm。花被は基部が短い花筒部となり，上部で5枚に切れ，平開する。…

※「Omphalodes」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