1. In botany, saffron and safflower are not the same family and genus. Crocus sativus belongs to Crocus of Iridaceae, which is a perennial herb. Generally, only flowers do not bear seeds, and they propagate by bulbs. It is native to Spain and other Mediterranean countries. Historically, China has been imported from western countries, so it is called saffron. Saffron was introduced into the mainland from India through Tibet, so it is also called saffron. It is a misunderstanding that saffron is named after its origin. In fact, Tibet does not produce saffron, and its official medicinal name should be saffron.

2. The medicinal part of saffron is its red pistil, which is oily and shiny, slender and linear, about 3 cm long, smelly and slightly bitter. When the saffron filaments are immersed in water, the orange gradually spreads, and the whole glass of water is dyed yellow in a short time without precipitation.