Ficus Amstel King Aka Ficus Alii Tree is a large species that actually originated from Asia, but started its commercial distribution from Hawaii, where it got its name as Alii, which means King. They are too in relation to Ficus Benjamin, with having attractive green foliage and hardy trunk and being excellent air-purifiers. Distinctive about Ficus Amstel King is that they got slender shape long leaves apart from other similarities. And it’s also more tolerant and forgiving to any poor growth conditions, and they rarely shed their leaves. All these conditions make them perfect houseplants.