Cyathea australis —Black Tree-fern, Rough Tree-fern —CYATHEACEAE

Cyathea australis

Link to Images on Flickr.

Habitat—Widespread in rainforest or open forest, in gullies or on hillsides in moist, shady situations

Distribution—North from Tasmania into Victoria, New South Wales and North Queensland.

Description—Trunk 2.5 to 20 m high, 16 to 40 cm diam., covered, at least in upper part, by the persistent bases of the stipes; scales of trunk and stipe base shiny, red-brown, stiff and often twisted, 2 to 5 cm long, with inconspicuous pale fragile edges

Local occurrences

Barrington/Gloucester Tops, Booti Hill, Cape Hawke, Charlotte Head, Copeland, Royal Botanic Gardens Sydney, Sea Acres National Park and Waitui Falls.

Fronds.— 2 to 3 m long; stipe to 60 cm long, bearing conical spines on the dark brown base; lamina mostly 3—pinnate or sometimes 2—pinnate with secondary pinnae pinnatifid, dark green above, paler green below, ultimate segments shallowly crenate to toothed.

Cyathea australis
Cyathea australis

Sori.—Lacking a true indusium but base of sorus often bears a semicircular series of small scales