Why are Ti leaves offered to Pele, The Fire Goddess??

Question

As I understand it, Ti leaves are wrapped around rocks and left at the craters as an offering to Pele, the Fire Goddess. My question is "Why ti leaves specifically?"

Answer 1

The Ti are the only plant in Hawaii that don't grow on volcanic ash, so it is thought that the Goddess- Who admires the burning of life, would love to burn something that she couldn't get a hold of.