A type of tree that grows in tropical Asia. The bark of cassia is used as a spice that tastes similar to cinnamon but is not as high quality.
The "cassia" mentioned in the Bible comes from the cassia bark tree (Cinnamomum cassia). It is one of the ingredients used in holy anointing oil (Exodus 30:24). It was also a valuable trade item (Ezekiel 27:19). comes from the cassia bark tree (Cinnamomum cassia).
In Psalm 45:8, the reference seems to be to a different plant called Indian orris (Saussurea lappa).