Cyathea medullaris (G.Forst.) Sw.

Black Tree Fern

Trunk to 20 cm wide and 15 m tall, swollen at the base with adventitious roots, frond bases shed to leave hexagonal scars. Fronds to 6 m long, divided 3 times, the stalk and midrib brown with a waxy bloom and many warty lumps. Sori large, round. Indusium round.

Will tolerate cool conditions.

NZ, Polynesia.

Trunk bare of frond bases and covered with clean-cut scars; frond stalks more or less black.

Source: Spencer, R. (1995). Cyatheaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 1, Ferns, conifers & their allies. The identification of garden and cultivated plants. University of New South Wales Press.

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Distribution map
kingdom Plantae
phylum   Tracheophyta
class    Polypodiopsida
order     Cyatheales
family      Cyatheaceae
genus       Cyathea Sm.