Cyathea Medullaris is a species of tree fern native to New Zealand. It is also known by various other names, including Mamaku, Black Tree Fern, Giant Tree Fern, Black Fern, or Mako. While these are all synonyms, they may be used in different contexts or regions. The term mamaku is commonly used in Maori culture and cuisine, where the young shoots are cooked and eaten as vegetables. The name black tree fern refers to the dark, almost black color of the fronds. Giant tree fern emphasizes its height (up to 20 meters) and impressive size, while black fern/mako highlights its dark color and resemblance to ferns commonly found in other regions.