bright

Pennisetum is a perennial herb. In autumn and winter, the top of the stem is painted with purple-black bristles, which are shaped like wolf tails. Tender food

Ranunculus, Ranunculus also. Coming from the grass, good voice. -"Shuo Wen"

Its low humidity led to the birth of Ranunculus tibeticus. -Biography of Historical Records and Sima Xiangru

Another example: belladonna (plant name. Namely, green bristlegrass); Ranunculus ternatus (Ranunculus ternatus and Ranunculus ternatus) are two weeds. Often used to describe an evil person, or a place overgrown with weeds)

Dyed yarn

bright

Black fairy

Langdang

That is, "fairy". A perennial herb with poisonous yellowish-brown purplish flowers whose roots can be extracted from scopolamine, which is used medicinally to dilate pupils, relieve spasms and control secretion.

Dyed yarn

Leon

Shǔliáng: perennial twining vine of Dioscoreaceae. Underground tubers containing gum can be used as dyes.

Good and bad (be careful not to be a bad herb)

Old Town of Lijiang

Disease: green bristlegrass is a metaphor for people with poor quality. Metaphor is that good people and bad people are mixed together.

Nothing is more different than the stupidity of all beings, just like the good and bad grains are mixed. -Qing Wenkang's Biography of Heroes of Children