1) Dayflower 2) Herb 3) Herbaceous plant 1) Dayflower 
• (n.) An American endogenous plant (Tradescantia Virginica), with long linear leaves and ephemeral blue flowers. The name is sometimes extended to other species of the same genus.
any member of the genus Tradescantia (family Commelinaceae), which includes 20 or more erect to trailing, weak-stemmed herbs native to North and ...
Spi'der·wort` noun (Botany) An American endogenous plant ( Tradescantia Virginica ), with long linear leaves and ephemeral blue flowers. The name is sometimes extended to other species of the same genus. 
[n] - any plant of the family Commelinaceae
noun any plant of the family Commelinaceae