Blechnum parrisiae Christenh.

Common Rasp-fern

Phytotaxa 19: 20 (2011) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Fronds clustered, erect, 20–70 cm tall, stiff, harsh; in rock growth-form sterile fronds shorter than fertile ones, otherwise sterile and fertile fronds similar; young fronds often pink. Stipe much shorter than lamina, dark and moderately rough; scales broad, shiny, black, growing from tubercles which harden and persist. Lamina pinnate, dark green; lower pinnae (occupying less than one-third of lamina) oval to subtriangular, small, separated, attached by midribs only; pinnae below middle of lamina with bases strongly narrowed (more so on upper side), only the lowest pinnae stalked; pinnae in upper half sessile, widened bases contiguous, close-set; pinnae often with small dark scales on midribs; areoles narrow, in several rows on each side of midvein. Rachis moderately rough on lower surface, with short hairs and scattered dark scales. Sori oblong, 1–1.5 mm long, in 1–2 rows on each side of midvein, seldom becoming confluent.

CVU, EGL, EGU, GipP, Gold, GGr, HFE, HNF, HSF, NIS, OtP, OtR, Strz, VAlp, VVP, WaP, WPro. Also Qld, NSW (including Lord Howe Isl), ACT, Tas.,. New Zealand, New Caledonia. Almost coextensive with Blechnum rupestre in Victoria, occurring north of the Great Dividing Range in a few areas (e.g. upper Jamieson River, Strathbogie Ranges, Beechworth, Walwa area); spreads rapidly by runners and forms ground cover in open-forests, particularly near rivers, and in exposed habitats such as rock crevices or boulder-strewn slopes.

It exhibits a considerable variation in size and shape, and some growth forms are difficult to distinguish from B. rupestre but that species usually has dimorphic sterile and fertile fronds and sori that are confluent across the pinna midvein (and usually also laterally).

Source: Entwisle, T.J. (1994). Ferns and allied plants (Psilophyta, Lycopodiophyta, Polypodiophyta). In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons. Inkata Press, Melbourne (as Doodia media subsp. australis Parris).

Created by: Neville Walsh, 2016-09-19
Updated by: Val Stajsic, 2019-09-11
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
order Polypodiales
family Blechnaceae
genus Blechnum
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Blechnum parrisiae in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Blechnum parrisiae in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Volcanic Plain present native
Gippsland Plain present native
Otway Plain present native
Warrnambool Plain present native
Goldfields present native
Central Victorian Uplands present native
Greater Grampians present native
Northern Inland Slopes present native
East Gippsland Lowlands present native
East Gippsland Uplands present native
Wilsons Promontory present native
Highlands-Southern Fall present native
Highlands-Northern Fall present native
Otway Ranges present native
Strzelecki Ranges present native
Highlands-Far East present native
Victorian Alps present native