Blechnum filiforme (A.Cunn.) Ettingsh.

Thread Fern

Rhizomes long-creeping, sometimes climbing on available structures. Sterile and fertile fronds slightly different. Sterile fronds linear to ovate or elliptic in outline and to about 70 cm long; individual segments, narrowed to a pointed tip and stalked at the base; margins toothed. Fertile fronds of same size but with long and extremely thin segments. Stalks to about 10 cm long with scales that continue up the midrib.

Will tolerate cool conditions.


An unusual climbing species with extremely long, thin fertile segments.

Source: Spencer, R. (1995). Blechnaceae. 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.

Hero image
kingdom Plantae
phylum   Tracheophyta
class    Polypodiopsida
order     Polypodiales
family      Blechnaceae
genus       Blechnum L.