(black) henbane; a poisonous plant with a foul odor used in herbal medicine, also known as [[天仙子|天仙子|tian1 xian1 zi3]]

a plain-weave silk fabric dyed with the juice of the [[薯莨|薯莨|shu3 liang2]] plant; typically dark and shiny on one side and brown on the other, it is breathable and commonly used for summer clothing

A perennial climbing vine (Dioscorea cirrhosa) with a purple-black tuberous root used to produce a reddish-brown dye for cotton and linen fabrics

(bound form) a type of grass, often used in botanical names

traditional silk fabric dyed with juice from the tuber of the dye yam to create a dark, coated finish