Blechnum nudum

Common name: 

Fishbone Water-fern

Distribution (from Flora of Victoria):

Wannon, Grampians, Midlands, Victorian Volcanic Plain, Otway Range, Eastern Highlands, Gippsland Plain, Gippsland Highlands, Wilsons Promontory, East Gippsland (CDEJKNPRSTVWZ) also SA, Qld, NSW, Tas

Map - Australia's Virtual Herbarium

Distribution and ecological preference at Wilsons Promontory (if known):

Common on flat ground around streams1

Flower description:



Fern to 60 cm tall (rarely larger) forming a rosette2

Distinguishing characteristics (within family/genus):

Fertile and sterile fronds appear different. This species is most easily confused with B. chambersii, it is distinguished from this species by its erect fertile frond and pinnae that are not toothed2
Blechnum nudum is more common.

Image of Blechnum nudum
Image of Blechnum nudum
Image of Blechnum nudum
Image of Blechnum nudum Image: Ruby Wilson
Conservation status:

Not threatened


1 Meagher, D. and Kohout, M. (2001). “A field guide to Wilsons Promontory”. Oxford University Press, South Melbourne, Vic.
2 Walsh, N. G. and Entwisle, T. J. “Flora of Victoria”, volumes 2 (1994), 3 (1996) and 4 (1999). Inkata Press, Port Melbourne, Victoria