You searched for: “pyrophile
pyrophile (s) (noun), pyrophiles (pl)
A plant that requires fire for reproduction: The buckbrush and manzanita are both pyrophiles because the seeds with such hard shells need the heat from a fire to break them open and to enable them to sprout.
pyrophile (s) (noun), pyrophiles (pl)
Someone who has a special attraction to fires: Joe's brother was a pyrophile who was totally enthusiastic about fireworks and fire.

Sandy's father was a pyrophile, a specialist in volcanoes, and explained to her that they were caused by natural internal heat from inside the Earth.