Phellandrene
Phellandrene is a minty-citrus pine monoterpene. Labs often split alpha-phellandrene and beta-phellandrene. Those are two shapes in the same smell family, not two unrelated plants. People search phellandrene and a-phellandrene.
Eucalyptus, pepper, and some mint-oil lists are the usual outside-cannabis home for the word. The nose is often peppery citrus-pine, not straight lemon peel.
On flower reports phellandrene is usually minor. A pepper or eucalyptus menu line does not prove this isomer is on the COA. If the sheet only says phellandrene, stay on this page. If it prints alpha-phellandrene, that is the common catalog spelling of the same neighborhood.
Compare with pinene and terpinene when the mix reads pine-pepper rather than dessert floral. One panel is one sample.