It was always surprising to me that every pine except for Ponderosa pine would be edible. It’s rare to see a single anomaly like that within an entire genus. What wasn’t surprising was discovering that it isn’t true at all. The chemical in question is isocupressic acid, and I would be willing to bet that it’s in many members of the Pinophyta division as we see it in Pines (family Pinaceae) as well as Juniper and Cypress (family Cupressaceae).The origin of this myth is several studies that found

Removing ponderosa pine trees from behind a house up at Terry peak | American Tree and Forestry Care