One particular tree, the Hevea tree, or more commonly known as the rubber tree, is probably the most famous hydrocarbon plant,
Products made from guayule natural rubber emulsions also do not contain the proteins from the Hevea rubber tree, and do not cause allergy in persons sensitized to Hevea proteins.
While Hevea-derived rubber contains proteins that can cause severe allergic reactions in a few people, guayule does not.