beach speedwell; Veronica longifolia
A flowering plant species; the Japanese name literally means 'lapis lazuli tiger's tail'.
Beach speedwell produces bluish-purple flowers in summer.
Standard kanji spelling for this plant name.
Alternate kanji spelling; rarely used.
The name 瑠璃虎の尾 (るりとらのお) is a compound of 瑠璃 (lapis lazuli, referring to the blue color), 虎 (tiger), and 尾 (tail), likely describing the plant's flower spike. The exact origin is uncertain.