Sphaeropteris medullaris

Sphaeropteris medullaris, synonym Cyathea medullaris, commonly known as mamaku or black tree fern, is a large tree fern up to 20 m tall. It is distributed across the south-west Pacific from Fiji to Pitcairn Island. Its other Māori names include katātā, kōrau, or pītau.

Black tree fern
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Cyatheales
Family: Cyatheaceae
Genus: Sphaeropteris
Species:
S. medullaris
Binomial name
Sphaeropteris medullaris
(G.Forst) Bernh.
Synonyms
  • Alsophila extensa Desv.
  • Cyathea medullaris (G.Forst.) Sw.
  • Cyathea polyneuron Colenso
  • Polypodium medullare G.Forst.
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