Question: What is the name of the plant that Hina dye is prepared from?  
Sentence (from "Henna"): Henna (Arabic: حِنَّاء‎ ‎ ) is a dye prepared from the plant "Lawsonia inermis", also known as hina, the henna tree, the mignonette tree, and the Egyptian privet, the sole species of the "Lawsonia" genus.
Relevant evidence: Yes