People in the city may have the biggest impression of Commelina commemorum because of the "Zhi" in its name. It is written as "Toe" because of misunderstanding, or it is pronounced as "Tuo" because it cannot read. There are many people there (yes, I’m talking about you). "Zhi" means "foot sole". However, there is no part of the grass on the body that can be linked to the "duck paw". It is simply nonsense to name it.

However, the word "Zhi" can also be used as a verb, meaning "to step on". It reminds us that there are many ducks and ducks growing on the waterside, so the name can barely be explained. However, the name Commelina is a bit tacky for such a fresh and elegant grass. Yang Xunzhai of the Song Dynasty described it in "Ode to the Green Cicada": "The flower rustles beside the sparse fence, and the thin wings spread out and are ready to fly. I mistakenly fanned the beauty several times, but I realized that the misunderstanding was in vain." The blue petals spread out. It rises like a cicada's wings and is about to fly, causing the beauty to swoop at it with a fan. The "green cicada flower" here is the commemorative plant. In addition, commelina also has poetic nicknames such as "blue nopal", "emerald flower" and "emerald butterfly", which make this small flower appear beautiful, refined and fairy-like.

Bamboo leaves and blue flowers are the biggest feature of Commelina communis. The commelder flower is small, half-wrapped by a green beak-shaped spathe, with two indigo petals hanging high and a small translucent petal "hidden" underneath, which shrinks and falls early, making it very inconspicuous. It is said that the great god Linnaeus originally designated the genus Commelina as Commelina, which was a metaphor for the three members of the Commelin family in the Netherlands. Just like the flowers of Commelina, uncles and nephews Jan and Caspar are both famous plants. scholar, the third person did nothing.

Commonium communis has a long flowering period, and these small emerald blue flowers can be appreciated in all seasons except winter. However, the time for the flowers to bloom and wither is very short. They bloom under the morning dew in the morning, and then wither when night falls, leaving only a clam-like bract. The Japanese call commelder grass "dew grass", which is easily reminiscent of Cao Cao's "Dan Ge Xing" "For example, the morning dew makes the day more bitter"; dew grass often appears in Ukiyo-e paintings, exaggerating a sense of melancholy. In addition, the petals of dew grass contain compelin, which can be extracted and used as a dye. It is called "dew grass color" and is as green as black. A kind of blue paper produced in Shiga Prefecture, Japan, is made of paper immersed in this dye. However, the blue paper color is unstable and will fade to yellow-green within a few months when exposed to strong light.