Question: What island that Zanthoxylum hawaiiense can be found on is nicknamed“The Friendly Isle”? 
Sentence (from "Zanthoxylum hawaiiense"): It can be found at elevations of 550 – in dry forests, where it grows on lava flows, and mixed mesic forests on the Island of Hawaiʻ i, Maui, Molokaʻ i, and Lānaʻ i.
Relevant evidence: Yes