露草

Literally, “dew grass”, compound of 露(つゆ) (tsuyu, “dew”) + 草(くさ) (kusa, “grass”)

• IPA^(key): [t͡sɨjɯ̟kɯ̟sa̠]

露(つゆ)草(くさ) or 露草(ツユクサ) • (tsuyukusa) 

1. Asiatic dayflower, Commelina communis

   Synonyms: 鴨跖草 (ōsekisō), 鎌柄 (kamatsuka), 月草 (tsukikusa), 帽子花 (bōshibana), 蛍草 (hotarugusa), 蜻蛉草 (tonbo-gusa)

2. clipping of 露草色 (tsuyuiro, “a shade of blue”)
3. dew; the dew of the grass

As with many terms that name organisms, this term is often spelled in katakana, especially in biological contexts (where katakana is customary).

• 大帽子花(おおぼしばな) (ōboshibana, “Commelina communis var. hortensis”)